added Android.mk, so we can build Droidwall in AOSP tree
localized strings
Added check for iptables binary already exists in system
Typo fix
Merge pull request #2 from fjfalcon/master

Greetings.
fixes a quote typo

Change-Id: I98a6d4854de2349f4e2960331f3f10c56c2965d7
fix typo
Merge pull request #3 from Quarx2k/master

fix typo in generating script