Drop the explicit sheet/nav presentations

As discussed in Issue #3. Users of the framework will
mostly use automatic presentations. And if they want
to do something custom, they still can. Just use the
bindings available for the active VC and attach those
to the `isActive` binding of the View presentation.

ViewController.xcodeproj/project.pbxproj

@@ -19,10 +19,6 @@
 		E80050272816EE3400E4805C /* ViewControllerInfo.swift in Sources */ = {isa = PBXBuildFile; fileRef = E80050252816EE3400E4805C /* ViewControllerInfo.swift */; };
 		E8283B432819629E00467F10 /* ContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = E8283B422819629E00467F10 /* ContentView.swift */; };
 		E8283B442819629E00467F10 /* ContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = E8283B422819629E00467F10 /* ContentView.swift */; };
-		E836E5A0280EEA870001B85E /* PushPresentation.swift in Sources */ = {isa = PBXBuildFile; fileRef = E836E59F280EEA870001B85E /* PushPresentation.swift */; };
-		E836E5A1280EEA870001B85E /* PushPresentation.swift in Sources */ = {isa = PBXBuildFile; fileRef = E836E59F280EEA870001B85E /* PushPresentation.swift */; };
-		E836E5A3280EEACA0001B85E /* SheetPresentation.swift in Sources */ = {isa = PBXBuildFile; fileRef = E836E5A2280EEACA0001B85E /* SheetPresentation.swift */; };
-		E836E5A4280EEACA0001B85E /* SheetPresentation.swift in Sources */ = {isa = PBXBuildFile; fileRef = E836E5A2280EEACA0001B85E /* SheetPresentation.swift */; };
 		E836E5AD280EECD50001B85E /* PushLink.swift in Sources */ = {isa = PBXBuildFile; fileRef = E836E5AC280EECD50001B85E /* PushLink.swift */; };
 		E836E5AE280EECD50001B85E /* PushLink.swift in Sources */ = {isa = PBXBuildFile; fileRef = E836E5AC280EECD50001B85E /* PushLink.swift */; };
 		E83ADA662814267600D98D82 /* Containment.swift in Sources */ = {isa = PBXBuildFile; fileRef = E83ADA652814267600D98D82 /* Containment.swift */; };
@@ -77,8 +73,6 @@
 		E80050252816EE3400E4805C /* ViewControllerInfo.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ViewControllerInfo.swift; sourceTree = "<group>"; };
 		E8283B422819629E00467F10 /* ContentView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContentView.swift; sourceTree = "<group>"; };
 		E836E59E280EEA0A0001B85E /* README.md */ = {isa = PBXFileReference; lastKnownFileType = net.daringfireball.markdown; path = README.md; sourceTree = "<group>"; };
-		E836E59F280EEA870001B85E /* PushPresentation.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PushPresentation.swift; sourceTree = "<group>"; };
-		E836E5A2280EEACA0001B85E /* SheetPresentation.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SheetPresentation.swift; sourceTree = "<group>"; };
 		E836E5AC280EECD50001B85E /* PushLink.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PushLink.swift; sourceTree = "<group>"; };
 		E83ADA652814267600D98D82 /* Containment.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Containment.swift; sourceTree = "<group>"; };
 		E83ADA77281444B000D98D82 /* TypeMismatchInfoView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TypeMismatchInfoView.swift; sourceTree = "<group>"; };
@@ -150,8 +144,6 @@
 				E8BA6EBE2815914F00FA6C5C /* ViewControllerPresentation.swift */,
 				E8E7066827F2014F00F50160 /* PresentationMode.swift */,
 				E800501F2816C40600E4805C /* AutoPresentation.swift */,
-				E836E59F280EEA870001B85E /* PushPresentation.swift */,
-				E836E5A2280EEACA0001B85E /* SheetPresentation.swift */,
 			);
 			path = Presentations;
 			sourceTree = "<group>";
@@ -354,7 +346,6 @@
 				E88DCE802812D6A700CD5203 /* Subscriptions.swift in Sources */,
 				E8BA6EBF2815914F00FA6C5C /* ViewControllerPresentation.swift in Sources */,
 				E88DCE702812C83C00CD5203 /* ReExports.swift in Sources */,
-				E836E5A3280EEACA0001B85E /* SheetPresentation.swift in Sources */,
 				E83ADA662814267600D98D82 /* Containment.swift in Sources */,
 				E800501D2816B09A00E4805C /* DebugOverlay.swift in Sources */,
 				E83ADA78281444B000D98D82 /* TypeMismatchInfoView.swift in Sources */,
@@ -366,7 +357,6 @@
 				E88DCE862812DF8200CD5203 /* RepresentedObject.swift in Sources */,
 				E88DCE832812DD8B00CD5203 /* Title.swift in Sources */,
 				E80050202816C40600E4805C /* AutoPresentation.swift in Sources */,
-				E836E5A0280EEA870001B85E /* PushPresentation.swift in Sources */,
 				E800501A2816B00E00E4805C /* DebugMode.swift in Sources */,
 				E88DCE892812E9CD00CD5203 /* Presentation.swift in Sources */,
 				E88DCE7D2812D3A300CD5203 /* ViewControllerStorage.swift in Sources */,
@@ -391,7 +381,6 @@
 				E88DCE812812D6A700CD5203 /* Subscriptions.swift in Sources */,
 				E8BA6EC02815914F00FA6C5C /* ViewControllerPresentation.swift in Sources */,
 				E88DCE712812C83C00CD5203 /* ReExports.swift in Sources */,
-				E836E5A4280EEACA0001B85E /* SheetPresentation.swift in Sources */,
 				E83ADA672814267600D98D82 /* Containment.swift in Sources */,
 				E800501E2816B09A00E4805C /* DebugOverlay.swift in Sources */,
 				E83ADA79281444B000D98D82 /* TypeMismatchInfoView.swift in Sources */,
@@ -403,7 +392,6 @@
 				E88DCE872812DF8200CD5203 /* RepresentedObject.swift in Sources */,
 				E88DCE842812DD8B00CD5203 /* Title.swift in Sources */,
 				E80050212816C40600E4805C /* AutoPresentation.swift in Sources */,
-				E836E5A1280EEA870001B85E /* PushPresentation.swift in Sources */,
 				E800501B2816B00E00E4805C /* DebugMode.swift in Sources */,
 				E88DCE8A2812E9CD00CD5203 /* Presentation.swift in Sources */,
 				E88DCE7E2812D3A300CD5203 /* ViewControllerStorage.swift in Sources */,