Only build master branch on travis (#168)
Only build master branch on travis (#168)


dart-lang/markdown,srawlins/dart-markdown,dart-lang/markdown,dpeek/dart-markdown,srawlins/dart-markdown,dpeek/dart-markdown,srawlins/dart-markdown,tomyeh/markd,tomyeh/markd,tomyeh/markd,dart-lang/markdown