Merge branch 'master' into remove-end-user-deprecation-warnings

.travis.yml

@@ -22,7 +22,7 @@ matrix:
     os: osx
 
 before_script:
-- go get github.com/urfave/gfmrun/...
+- go get github.com/urfave/gfmrun/... || true
 - go get golang.org/x/tools/... || true
 - if [ ! -f node_modules/.bin/markdown-toc ] ; then
     npm install markdown-toc ;

runtests

@@ -57,6 +57,10 @@ def _test():
 
 
 def _gfmrun():
+    go_version = check_output('go version'.split()).split()[2]
+    if go_version < 'go1.3':
+        print('runtests: skip on {}'.format(go_version), file=sys.stderr)
+        return
     _run(['gfmrun', '-c', str(_gfmrun_count()), '-s', 'README.md'])