Changing AndroidTv to Android TV
Updating lessons
finishing codelab step 2
Merge branch 'master' of https://github.com/pengying/androidtv-codelab
Updating lessons
minor fixes
Merge branch 'master' of https://github.com/pengying/androidtv-codelab
Updating lessons
Merge branch 'master' of https://github.com/pengying/androidtv-codelab
Updating lessons
added image to lesson 4 and adjusted lesson 6 to markup of other lessons. Copied lesson 6 markup over to file to have it displayed.
adding step 3
added illustrative screenshot to lesson 6
merging
merge branch 'master' of https://github.com/pengying/androidtv-codelab
finishing step 3 content
some more comments and minor improvements
adding theme
Updated github url
Merge branch 'master' of https://github.com/pengying/androidtv-codelab