Adding Interactive Data Language (IDL) support.
Merge branch 'pr/425' into idl_support
Updating samples to include IDL
Merge branch 'master' into idl_support

Conflicts:
	lib/linguist/samples.json
Removing .pro extension for prolog
Merge pull request #857 from github/idl_support

Idl support
Merge branch 'master' into perl_6

Conflicts:
	lib/linguist/samples.json