merge commits from steph and sarah
merge changes from steph
Merge remote-tracking branch 'upstream/master'
added page templates for different sections of the tutorial, added 'Lorem' into the content for later edits, change a bit of css background color might change it back later
added new exercise files for basic anims, change file name from tryItYourself.html to createBasicAnim.html, added menu bars for all pages, side meu bars are not quite working yet, will sort them out later
Merge pull request #27 from sandyphan/master

Added new files to tutorial folder