Updated the ideal block number.
Updated the while blocks to remove the dropdown when there is only one option. Also, changed the while current spot is not clear to have images.
Added a level before Level 11 that just has mound.
Changed mounds to pile.
Changed the give blocks in Karel 2 to be uneditable and undeletable.
Speeded up certain levels that have a lot of steps.
Fixes trashcan bug.
Removed language menu from Maze and Turtle.
I didn't feel comfortable changing Bird and Farmer, but their
owners can change them by commenting out or removing the definitions
of languageMenu in their template.soy files.
Added project layout and installation to README
Merge branch 'README' of https://github.com/tobyk100/blockly into README