More installation instructions and travis integration.

Author: samscott89

.travis.yml

@@ -0,0 +1,10 @@
+language: java
+jdk:
+  - oraclejdk8
+  - oraclejdk9
+  - openjdk7
+# The main build
+script:
+  - wget https://github.com/libpasta/pasta-bindings/releases/download/v0.0.4-rc.1/libpasta_jni.x86_64-unknown-linux-gnu.so -O libpasta_jni.so
+  - mkdir -p src/main/resources/META-INF/lib/linux_64/ && mv libpasta_jni.so src/main/resources/META-INF/lib/linux_64/
+  - mvn package

README.md

@@ -3,11 +3,34 @@ Java support for libpasta
 
 This repo produces a self-contained jar file for libpasta.
 
-Steps to produce:
+## Requirements
+
+Currently, only 64-bit linux is supported, but we are aiming to support more
+platforms.
+
+Both of the below approaches require `libcrypto.so.1.0.0` usually available through
+`libssl` or similar package. The currently required version of GLIBC is 2.14.
+
+## Using libpasta-java
+
+### Precompiled .jar
+
+Download a released jar from [Releases](https://github.com/libpasta/libpasta-java/releases).
+
+Include as usual.
+
+### Steps to produce from source (requires Rust):
 
  * Sync submodules: `git submodule init && git submodule sync --recursive`
- * Using `pasta-bindings` submodule, produce the java libpasta.so file: `cd pasta-bindings && make java && cd ..` (requires Rust).
+ * Using `pasta-bindings` submodule, produce the java libpasta.so file: `cd pasta-bindings && make java && cd ..`.
  * Move the appropriate file to the maven directory: `mkdir -p src/main/resources/ && cp -r pasta-bindings/java/META_INF src/main/resources/META-INF`
  * Compile the jar: `mvn package`.
 
-The resultant jar file should be in target/libpasta-java-{version}-jar-with-dependencies.jar.
+### Steps to produce using precompiled library:
+
+ * Get the most recent precompiled library from the pasta-bindings releases [https://github.com/libpasta/pasta-bindings/releases/]
+   - e.g. `wget https://github.com/libpasta/pasta-bindings/releases/download/v0.0.4-rc.1/libpasta_jni.x86_64-unknown-linux-gnu.so -O libpasta_jni.so`
+ * Move to the appropriate directory: `mkdir -p src/main/resources/META-INF/lib/linux_64/ && mv libpasta_jni.so src/main/resources/META-INF/lib/linux_64/`
+ * Compile the jar: `mvn package`.
+
+The resultant jar file should be in target/libpasta-java-{version}-jar-with-dependencies.jar.

pom.xml

@@ -42,4 +42,9 @@
       </plugin>
     </plugins>
   </build>
+
+  <properties>
+    <maven.compiler.source>1.6</maven.compiler.source>
+    <maven.compiler.target>1.6</maven.compiler.target>
+  </properties>
 </project>