Merge pull request #2 from dmcglinn/master

Create the skeleton of an R package with a basic Retriever interface
Updating the README with new function names and functionality
Creating a new script creates a text script not a Python script

Therefore the examples should the use of the .script extension
not the .py extension.
Merge pull request #3 from ethanwhite/update-readme

Updating the README with new function names and functionality
Merge pull request #4 from ethanwhite/script-not-py

Creating a new script creates a text script not a Python script