- added screen 1 (MainActivity) with static data, scrollable layout with
pinned header through the code under com-ediblelearning.helper
- first screen (MainActivity) with static data taken from Data.java and
using the layout for scrolling lists with a pinned header found in
com.ediblelearning.helper

- second screen (Class.java) is stub

- third screen (FullScreenLesson.java) is showing a static video full
screen. The file Lesson.java is going to be the enhanced version of the
3rd screen.

- JSONService: is able to connect and read the file, still not able to
message the information back to the activities