May be you should know how an android project is built.
You can refer the HelloWorld example or the ndk example.
Following are some steps:
1. use create-android-project.bat(under windows) or create-android-project.sh(under linux or mac os) to create an android project
2. copy TweeJump code(the .cpp and .h file) into PROJECT_ROOT/classes
3. modify the PROJECT_ROOT/android/jni/helloworld/Android.mk to compile the TweeJump code