link to raw version of default.amethyst
Merge pull request #199 from amfarrell/master

link to raw version of default.amethyst in README
Some touch ups to README for accuracy
Make the app buildable on Xcode 6

This break backwards compatibility with Xcode 5. Really need to start releasing
dev builds
Merge branch 'master' into development

* master:
  link to raw version of default.amethyst

Conflicts:
	README.md
Install Crashlytics
Bump version to 0.9
Actually start Crashlytics
Don't use NSScreen equality checks and cache screen managers

This fixes two bugs:

  - When adding/removing displays, screens would stop tiling because the screen
    manager would be cached, but +[NSScreen screens] would return new instances.
    Comparison was done on an instance-by-instance basis so when getting windows
    for the screen windows would return the new instance, while the screen
    manager would have the old instance. The solution is to the use the static
    screen identifier obtained using private APIs.

  - Because we cache screen managers by screen identifiers adding and removing
    displays doesn't reset layouts.

Closes #215
Update Podfile.lock for cocoapods update
Actually make Crashlytics work
Just use static Sparkle
Update README for 0.9
Update README.md
Update README.md
Use Developer ID Application for code signing
Bump verision for 0.9.1
Update README to point to 0.9.1
Merge branch 'development'

* development:
  Update README to point to 0.9.1
  Bump verision for 0.9.1
Update README.md