Updated Auth text for personal access tokens
added beta signup announcement
Change PUT to PATCH for partial updates
Format changes and some tweeaks to the documentation.
Update getting-started.md to use curl in examples
Updated transactions documentation
Updated trades documentation
Tiny style change in transactions doc.
Changed getting started and index info
Added alltransactions endpoint.
Fixed some links, Added content about options requests
Edited API URL table
General content clean-up, changing auth, intro, and guides
add python rest wrapper to code samples
Fix rate limiting doc
Fix accounts call and call out http vs https
add note about patching orders and trades
Updated /accounts response
Added TTL header 'Expires' to response header of /instruments