1.2.0: Merge pull request #21 from nasduck/dev

Update readme and rm app_name in lib

1.1.2

• Add all missing dangerous permissions and related demos. For list of dangerous permissions, please check Permission-Groups

1.1.1

• Support Access Coarse Location

1.1.0

• Simplify the way to request permissions. eg. DuckPermission.getInstance(this).requestAudioRecord()
• Offer result code corresponding to each permission. eg. DuckPermission.RESULT_CODE_RECORD_AUDIO
• Support Access Fine Location

1.0.0

• Support Audio Record Permission