lbernstone a7ddf39521 Cleanup on README and boards_manager (#1693)
* Added instructions for installation with boards manager (stolen directly from esp8266)

* changed to production link instead of dev

* Added to main README. Made mods to images as requested.

* Added links for development package

* Moved version images to README.md

* Just a little change for cleaner look

* Cleaned up README.md and boards_manager.md to make installation easier.
2018-07-30 10:21:03 +03:00
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