add coffee files
manually edited workspace.coffee
manually edited forceSliders.coffee
manually edited keyListener.coffee
manually edited linkHistogram.coffee
manually edited selection.coffee

then remove js files and ignore them

js files need to compiled locally with:
coffee --watch --compile -o core/ core-coffee/
small fix in linkHistogram.coffee
remove extra newlines at end of files
remove leftover comment
correct comment location in selection.coffee
add some return statements
string interpolation
remove anonymous functions
fix ci to compile coffeescript first
Merge branch 'coffee-test' into coffee
ok for realz, get ci working with coffeescript
Merge pull request #64 from jdhenke/coffee

convert to coffeescript