Merge pull request #1486 from zwpaper/develop

gitGraph dot and minus should be valid branch name

src/diagrams/git/parser/gitGraph.jison

@@ -1,4 +1,3 @@
-
 /*
  * Parse following
  * gitGraph:
@@ -34,7 +33,7 @@
 ["]                                    this.begin("string");
 <string>["]                            this.popState();
 <string>[^"]*                          return 'STR';
-[a-zA-Z][a-zA-Z0-9_]+           return 'ID';
+[a-zA-Z][-_\.a-zA-Z0-9]*[-_a-zA-Z0-9]  return 'ID';
 <<EOF>>                                return 'EOF';
 
 /lex