update README.md.
Prepare Makefile, boot.img and recovery.img or recovery.fstab.

  1. Using the command "makeconfig" to generate Makefile.
  2. Find a original boot.img or cat the boot.img from your own device.
  3. Find a useful recovery.img such as the cwm recovery or a correct recovery.fstab.

  Note: If you have to modify the boot.img, don't forget to add "vendor_modify_images := boot"
        in the Makefile.

Change-Id: Iab197168f53256ecc5faabdc6f507eccc4aeb9fd
make newproject for the base device with the command "make newproject".

  Connect your device and PC with an USB cable.
  And also, make sure you have root permission for your device.

Change-Id: I74eac73d41830bf55d822ca666f02701b1ac32fb
add aosp folder for patchall quickly.

Change-Id: Ice4c1a248e8080c67dfa4f245e9d8d9b00f0d0b3
make patchall for the base device with the command "make patchall".

  Note: The command "make patchall" can auto-patch files according to the aosp and bosp
        in the autopatch folder in your device directory, please wait a moment.

Change-Id: I8a09b104318215a482acb00b29e98441a9dec6af
adjust some patch files and add some property specification in the makefile.

Change-Id: I5daae236fec1a1edb00031adb89e3f6eb536961b
add patch files to adjust some apps for android 4.3.

Change-Id: I6171274cc069d6bb263d85ed3f206167f040e668
update the patch files.