Fix middleware request resource path

Don't assume req.path starts with /resource/.
Remove crumb references and instead document that context properties get added as query params
Update readme with CSRF information
Merge pull request #38 from yahoo/removeCrumb

Remove crumb references and instead document that context properties get added as query params
0.4.2
Add body-parser to simple example dependencies
[Resolves #41] Use lodash
Merge pull request #35 from ryanashcraft/fix-middleware-resource-path

Fix middleware request resource path
use ^ for lodash semver
Merge pull request #42 from yahoo/rmlodash

[Resolves #41] Use lodash
v0.4.3