ADD a CONTRIBUTING.md that is shown to users when they open a PR or create an issue
Some additions
Merge pull request #201 from Shopify/contributing

Add a CONTRIBUTING.md
Fix bug #179

Also reported at https://github.com/Shopify/sarama/pull/199#issuecomment-63636565

Go's closure semantics are really annoying - simply stop spawning goroutines
with the wrong arguments.

Add a test (heavily based on https://gist.github.com/ORBAT/d0adcd790dff34b37b04)
to ensure this behaviour doesn't regress.

Huge thanks to Tom Eklöf for getting me all the logs etc. needed to track this
down.
Merge pull request #202 from Shopify/fix-179

Fix bug #179
Drop official support for go 1.1
Merge pull request #203 from Shopify/drop-go-1.1

Drop official support for go 1.1
Add `go vet` as build step.
Merge pull request #195 from Shopify/govet

Add `go vet` as build step
Add errcheck to Travis build
Merge pull request #198 from Shopify/errcheck

Add errcheck to build
Add 1.4 to travis
Use go tip for now
.
.
:poop:
Add Replicas() and ReplicasInSync() to client

Switch the 'leader' hash to store the entire PartitionMetadata instead of just
the leaderID. After that quite straightforward.
add test
DRY up two functions
Merge pull request #208 from Shopify/expose-all-metadata

Expose all metadata