Add Buster.js
Switch out nodeunit tests for buster tests.
lineNumberTemplate should not depend on grunt.task
source path is fine.
Remove useless test.
Buster config file.
Rework the file test for buster.js
Rework syntaxHighlight test for Buster.js
Rework postOrder test for Buster.js
Rework git test for Buster.js