Update to README
Add .gitignore
OpenPdroid release v1.0.1

Fixes to SMS problems, performance and cache issues and more. Look at the
individual commits in the *-openpdroid branch in the various project trees
for more info, those trees mirror the patch releases, as does the auto-patcher
Merge branch '4.2.1' of https://github.com/OpenPDroid/OpenPDroidPatches into 4.2.1