Add support for file associations on OS X

[jrleeman]

With PropellerIDE set at the default program to open .spin files, double clicking on a given spin file opens the IDE, but the file double clicked on is not opened. The editor is just in its last known state. After the editor is open, clicking on a spin file does not open the file.

OS X 10.11.3
IDE 0.35.1

[bweir]

Yerp. File associations are not yet supported in PropellerIDE. =\

You can track the support of this issue here: https://lamestation.atlassian.net/browse/IDE-73

[jrleeman]

Okie dokie, I'll keep an eye over there. Thanks!

[bweir]

Hi there, Mr. Leeman, just wanted to let you know this feature will be available soon. I've added it for Windows and Linux. Mac is next!

[jrleeman]

Brett - Awesome! I just got a surface as well, so I'll probably be testing things on the windows side too depending on which bench I'm at. Thanks for all the work!