Initial createClass
Resolve #4. Bind req to each fetcher access/call
Refactor client fetcher to separate context & config
Update README
Update fetcher simple example
Use 'requireCrumb' instead of generic 'crumb' bool
Update example with requireCrumb
example: flickr fetcher should only be added on serverside, fix webpack config
Merge pull request #5 from yahoo/createclass

Fetchr refactored for createFetchrClass and per-request instantiation