Add PermissionsDispatcher to dependencies

[shiraji]

Add this to app/build.gradle

buildscript {
  dependencies {
    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
  }
}

apply plugin: 'android-apt'

dependencies {
  compile 'com.github.hotchemi:permissionsdispatcher:2.1.3'
  apt 'com.github.hotchemi:permissionsdispatcher-processor:2.1.3'
}

2.1.3 is hard coded for first release.

[shiraji]

Find build.gradle, get dependancy tag, find compile with PM package name.

If no packages, add compile/apt. If no apt plugin, add it.