Adding website content to the 'master' branch

This update added a complete set of files and directories to the 'master' branch needed for building a website with _**Hugo**_. As there is no 'gh-pages' branch in the 'ioos/ioos-csv-tsv' repository, the 'gh-pages' content from the 'abirger/ioos-csv-tsv' cannot be pulled, and must be added following the Website Deployment Workflow.
Before re-generating the website content in the 'public' directory, the 'baseurl' value has to be changed in the 'config.toml' file from "http://abirger.github.io/ioos-csv-tsv" to "http://ioos.github.io/ioos-csv-tsv" to let _**Hugo**_ properly render the pages.
The Website Deployment Workflow was slightly updated to make Step 4 less vague (it may require more editing anyway) .