Comma-separate the `global` inline JSHint configs
Comma-separate the `global` inline JSHint configs

According to http://www.jshint.com/docs, the variable names
after an inline `global` statement must be comma-seperated:

  "These comments start either with `jshint` or `global`
   and are followed by a comma-separated list of values"

Close h5bp/generator-mobile-boilerplate#4

h5bp/generator-mobile-boilerplate