Bump codegangsta/cli

vendor/github.com/codegangsta/cli/.travis.yml

@@ -2,6 +2,10 @@ language: go
 
 sudo: false
 
+cache:
+  directories:
+  - node_modules
+
 go:
 - 1.2.2
 - 1.3.3
@@ -25,8 +29,12 @@ matrix:
 
 before_script:
 - go get github.com/urfave/gfmxr/...
+- if [ ! -f node_modules/.bin/markdown-toc ] ; then
+    npm install markdown-toc ;
+  fi
 
 script:
 - ./runtests vet
 - ./runtests test
 - ./runtests gfmxr
+- ./runtests toc