Split Android PATH to its own export

Signed-off-by: Michael Welter <michael@cetoncorp.com>
Removed unused aliases that shouldn't be here regardless

Signed-off-by: Michael Welter <michael@cetoncorp.com>
Fixed typo in usage

Signed-off-by: Michael Welter <michael@cetoncorp.com>
Added command line argument check and show usage function using --help

Signed-off-by: Michael Welter <michael@cetoncorp.com>