Merge pull request #31 from hcilabasu/menuInteractions

Menu interactions
Committing the exploded epubs so we can edit them using versioning.
Moved all the sound files to a ’sound’ folder. Updated the circulatory.epub files with Sarah’s changes.
Modified the circulatory epub and the way the sound files are played.
Change the metadata on the circulatory.epub.
Added text page
added text file, need to change the vocab words and add the file to content and toc
added text file, need to add new vocab words and add files to content and toc
added text file. need to add new vocab words and add files to content and toc
added text file. need to add new vocab words and add files to content and toc
Updated the project settings.
Added English vocab to text pages and added the vocab pages to table of contents
Added the latest version of the bestFarm EPUB files.
Rebuilt the bestFarm.epub file.
edited the amazing heart intro in the t.o.c because there was a typo
Merge remote-tracking branch 'origin/SarahsBranch' into menuInteractions
Added ComboConstraints to specify what groups of actions/hotspots cannot be used simultaneously by an object. This helps filter out unwanted menu options—specifically the ones that looked correct but were actually incorrect in The Contest story of bestFarm.epub (i.e. farmer giving bucket to cat and farmer giving pumpkin to pig).