Configured Guard-Minitest for automatically running test suite on change
refined guard configuration; added puts in test setup for 'embedded signing' to display API errors; updated readme for with guard info
added support for signer specific tab data for creating envelopes from templates
Added example to readme.md demonstrating how to use custom tab data when creating an envelope from a template
Merge branch 'pr/13'
remove old code from pull request
Update homepage
Revert to minitest 4 to get guard working