[MPS/TL] [82594664] Added the ability to specify the "value" attribute of an autotag request in a "'autotag-value" data attribute
[MPS/LF] [82594664] Removed incomplete gulpfile.coffee. Added coffee-script support to devDependencies.
[MPS] [82594664] Removed coffee-script from devDependencies.
[MPS/TL/CW] [82594664] Move "autotag" into dataAttributePrefix variable.
Merge pull request #20 from primedia/mps_value_from_data_attr

get value from data attribute