Updated documentation for API auth end points

https://github.com/racker/rackspace-monitoring-cli/issues/60
Merge pull request #61 from wolfdancer/fix_auth_api

Updated documentation for API auth end points
Update .raxrc

Related to Issue #60
Merge pull request #62 from codebauss/patch-1

Update .raxrc
misspelling fix ('cteate' -> 'create')
Merge pull request #67 from abhikalakuntla/master

Small typo: misspelling fix ('cteate' -> 'create')
Expose hostinfo types command
Adds bugfix and test for util/str_to_dict, to correct the nested list handling
Merge pull request #69 from bravelittlescientist/raxmon-cli-nested-list-arguments

Supporting nested list arguments in input strings
Merge pull request #68 from racker/features/expose_hostinfo_types

Expose hostinfo types command
fix(check commands): If creating or updating an agent.plugin check, make sure that the arguments details is an array.
Fix silly syntax mistakes. JS is not python.
Merge pull request #70 from racker/jirwin/fix-args-bug

fix(check commands): Make sure to always pass an array when creating or updating an agent.plugin check.
Bump to v0.6.4
Allow usage of api_url and auth_token to bypass auth_url
Bump version to use rackspace-monitoring 0.6.4
Merge pull request #72 from racker/fix/version_bump

Bump version to use rackspace-monitoring 0.6.4
fix help message for --api-url to not include tenant id
Merge pull request #73 from racker/fix-api-url-help-message

fix help message for --api-url to not include tenant id
Minor updates to common.py

This change does the following:
- bails if a combination of username/api-key or auth_token/api-url are
  not provided
- changes variable assignment to group assignment by configuration
  section