Adding an "on the shoulders of giants" section and document (#237)

README.md

@@ -60,6 +60,11 @@ If you're not ready to contribute code yet, there are plenty of other great ways
     - [vgo wiki](https://github.com/golang/go/wiki/vgo) - context and details on how Go dependency management works in general
     - ["Go and Versioning"](https://research.swtch.com/vgo) - long papers on Go dependency management details, internals, etc...
 
+# Built on the Shoulders of Giants
+
+The Athens project would not be possible without the amazing projects it builds on. Please see 
+[SHOULDERS.md](./SHOULDERS.md) to see a list of them.
+
 # Code of Conduct
 
 This project follows the [Contributor Covenant](https://www.contributor-covenant.org/) (English version [here](https://www.contributor-covenant.org/version/1/4/code-of-conduct)) code of conduct.

SHOULDERS.md

@@ -0,0 +1,12 @@
+# On the Shoulders of Giants
+
+This project wouldn't be possible without the hard work of MANY other people and projects that it builds upon.
+
+In no particular order:
+
+- [Buffalo](https://gobuffalo.io)
+- [mgo](https://github.com/globalsign/mgo)
+- [Testify](https://github.com/stretchr/testify)
+- [redigo](https://github.com/garyburd/redigo)
+- [Protocol Buffers](https://github.com/golang/protobuf)
+- [Gocraft](https://github.com/gocraft/work)