fix typo found by mizuchi3 (ticket #35)
Merge pull request #34 from Traksewt/master

smoother animation
fix typo in balls and sticks rendering
fix recoloring of line-trace
fix recoloring of smooth line trace
don't release color buffers when they are still in use

Fixes most of #38.
add transparancy support to mesh and line geoms
check whether slabInterval returned a reasonable value

Patch by mitzuchi3
remove trailing comma

patch by mitzuchi3
appease grunt
change "transparency" to "opacity"
add missing jquery files (css and minified js)
add a small contribution how-to
bump version number to 1.2
add blurp on opacity to docs
mention docs in contribution howto
add public-facing API of BaseGeom to docs
return name of symmetry-related copy when setting it
fix typo in documentation