add Graphviz

grammars.yml

@@ -266,6 +266,8 @@ https://github.com/textmate/fortran.tmbundle:
 - source.fortran.modern
 https://github.com/textmate/gettext.tmbundle:
 - source.po
+https://github.com/textmate/graphviz.tmbundle:
+- source.dot
 https://github.com/textmate/groovy.tmbundle:
 - source.groovy
 https://github.com/textmate/haskell.tmbundle:

lib/linguist/languages.yml

@@ -956,6 +956,13 @@ Graph Modeling Language:
   extensions:
   - .gml
 
+Graphviz (DOT):
+  type: data
+  tm_scope: source.dot
+  extensions:
+  - .dot
+  - .DOT
+
 Groff:
   extensions:
   - .man