Inject MultiROM into ramdisk.cpio

Needed for Sony devices.
Add SlimKat Icon
Fix typo in README.MD
Merge pull request #24 from grondinm/master

Add SlimKat Icon
Merge remote-tracking branch 'Tasssadar/master'
Replace the recovery ramdisk while injecting MultiROM.

A workaround until a fix for the FOTA issues is found
Add target "bootimage" as prerequisite for install_zip
Set MultiROM version in header of new boot image

Required for MultiROM Manager
Merge remote-tracking branch 'Tasssadar/master'
Merge remote-tracking branch 'yuga/master'