Update README.md
Update README.md
Update toolchain + delete local Android Studio project file
Update contribution guidelines
Some gradle tuning.

o Set sdk versions in build.gradle
o Update .gitignore.
Merge pull request #23 from entertainyou/master

Extract build parameters from `build.gradle`
Work around for devices where android.view.GLES20Canvas.clipPath is not available

Resolves #20
Rebase against code from Android 4.4.4_r2

Resolves #21
Add logo
Update README
Use new Gittip badge
Display cropped image in example code

References #25
Allow setting the output file quality
Merge pull request #27 from vpratfr/master

Allow setting the output file quality
Merge branch 'master_origin'

Conflicts:
	CropImage/CropImage.iml
	CropImage/build.gradle
	CropImage/src/main/AndroidManifest.xml
	CropImage/src/main/java/com/android/camera/CropImage.java
	CropImageExample/build.gradle
	CropImageExample/src/main/AndroidManifest.xml
	android-cropimage.iml