Update readme.md
Add `yo` as peerDependency
Merge pull request #116 from passy/peerdep

Add `yo` as peerDependency
Update to latest H5BP. Fixes #117
Remove `yo` installation step

Since `yo` is installed through `peerDeps` we don't need this.
Merge branch 'master' of https://github.com/yeoman/generator-webapp