Update for compatibility and ease of use

Added quotes arround "%ANDROID_HOME%\platform-tools\adb" in case of file paths with spaces.

Added "rem" comments for ease of debugging

Added labels to separate code into sections for ease of debugging

Rewrote initialization so that it switches to the current directory on execution in case it was run as administrator.

Rewrote initialization so that ANDROID_HOME is cleared for compatibility.

Fixed wording so that the :disclaimer section is more readable.

Added a proper batch exit for compatibility with other automation programs (or scripts)