Create README.md
Merge branch 'master' of github.com:h5p/h5p-blanks

Conflicts:
	README.md
Minor cleanup making Blanks easier to work with. Some optimization and minor bug fixes.
Added option to require all fields to be answered before the solution can be viewed.
Merge branch 'master' into api-1.1
Merge branch 'api-1.1' into api-1.2