Removed Eclipse-specific default.properties file.
The default.properties is used by Eclipse to figure out its Android target.
It should not be in the project.
Fixed malformed package name.
For some reason, the HelloWorldActivity's package name had an extra "com"
Removed setup step about installing extra libs.
That was leftover documentation from another project and it doesn't apply.
Fixing numbered list formatting.
Minor formatting fixes to README.
Added sections to README.
Added "Why?" and "Roadmap". Fleshed out introduction.
Added a readme file that talks about how to setup, build, and run.
In order to use Maven, we need to do some `ln` magic.