Dexter is an Android library to handle runtime permissions for Marshmallow easily
'com.karumi:dexter:2.2.1'
<dependency>
<groupId>com.karumi</groupId>
<artifactId>dexter</artifactId>
<version>2.2.1</version>
</dependency>
<dependency org="com.karumi" name="dexter" rev="2.2.1"/>
"com.karumi", "dexter", "2.2.1"