Update endpoint url to use new, userless version
Get rid of method for field name constant

* It's only used once so there just isn't a win at this point
Include auth token in snapshot post

* Set token via environment variable AUTH_TOKEN
v0.2.0
Revert "Get rid of method for field name constant"

* This reverts commit d3e4d699f1838a5945fcdc455dea4b80786fc93f.
* I was wrong, this method is used in specs and that is probably a good
  thing...
s/field_name/file_field_name/ & add #auth_token_field_name
s/file/file_field/ & add #auth_token_field
Inject auth_token in initialize

* Rename environment variable s/AUTH_TOKEN/SNAPME_AUTH_TOKEN/
v0.2.1

* Fixing up some specs and renamed environment variable for auth token