Separate classes for groups of methods (#1)

* added resourcetype interface that's imported and reused

* added membergroupmembership; comments formatting typedoc output; updated types

* separate classes for groups of methods

* additional methods added, suggested changes made, typedoc documentation improved

documents/contributing.md

@@ -0,0 +1,23 @@
+---
+title: Contributing
+group: Contributing
+---
+
+# Contributing
+
+## Updating Documentation
+
+Documentation is setup to be hosted on github pages, it is generated using typedoc.
+
+Typedoc documentation can be found here: <https://typedoc.org/>
+
+### Guides
+
+The files for the guides are located in the documentation folder, they are written in markdown
+
+### Module Documentation
+
+To update the typedoc generated documentation for the module, run the following commands in the root of the repo:
+
+    npm install # Install only needs to be run first time.
+    npm run docs