Merge pull request #33 from tims/contrib

skeleton contributing guide

CONTRIBUTING.md

@@ -0,0 +1,21 @@
+# Contributing Guide
+
+## Code reviews
+
+All submissions, including submissions by project members, require review. We use GitHub pull
+requests for this purpose. Consult GitHub Help for more information on using pull requests.
+
+## Code conventions
+
+### Java
+
+We conform to the [java google style guide](https://google.github.io/styleguide/javaguide.html)
+
+If using intellij please import the code styles:
+https://github.com/google/styleguide/blob/gh-pages/intellij-java-google-style.xml
+
+### Go
+
+Make sure you apply `go fmt`.
+
+### JavaScript