Initial release

Changelog for v1.0.0:

• PR #2 Add CONTRIBUTING.md by @sargun
• PR #1 Add concurrency limiter by @sargun

Commits
ace4eb2 Update Derek to redirect to faas repo by @alexellis
6a78c3a Add CONTRIBUTING.md by @sargun
126d026 Add concurrency limiter. by @sargun
86bf0d2 Initial commit by @alexellis

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