Update ReadMe files

Author: mdmintz

README.md

@@ -12,7 +12,7 @@ pytest my_first_test.py --demo_mode
 
 ## <img src="https://cdn2.hubspot.net/hubfs/100006/images/super_square_logo_3a.png" title="SeleniumBase" height="32"> Quick Start:
 
-(<i>Requires **[Python/Pip](https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/install_python_pip_git.md)** [<img src="https://img.shields.io/badge/python-2.7,_3.x-22AADD.svg" alt="Python versions" />](https://www.python.org/downloads/). Optionally, you may want to use a [Python virtual environment](https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/virtualenv_instructions.md) to isolate Python dependencies between projects.</i>)
+(<i>Requires **[Python/Pip](https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/install_python_pip_git.md)** [<img src="https://img.shields.io/badge/python-2.7,_3.5,_3.6,_3.7-22AADD.svg" alt="Python versions" />](https://www.python.org/downloads/). Optionally, you may want to use a [Python virtual environment](https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/virtualenv_instructions.md) to isolate Python dependencies between projects.</i>)
 
 ### <img src="https://cdn2.hubspot.net/hubfs/100006/images/super_square_logo_3a.png" title="SeleniumBase" height="32"> Git clone and install SeleniumBase:
 ```

examples/master_qa/ReadMe.md

@@ -4,4 +4,4 @@ MasterQA combines web automation with manual verification to create a flexible t
 
 ### More info on MasterQA can be found [here](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/masterqa/ReadMe.md).
 
-![](http://cdn2.hubspot.net/hubfs/100006/images/masterqa_gif.gif "MasterQA")<br />
+![](https://cdn2.hubspot.net/hubfs/100006/images/masterqa6.gif "MasterQA")<br />

help_docs/happy_customers.md

@@ -1,13 +1,13 @@
 #### Some organizations that've grown their automation with SeleniumBase include:
 * [HubSpot](http://www.hubspot.com/)
-* [Jana](http://jana.com/)
 * [Veracode](http://www.veracode.com/)
 * [CA Technologies](https://www.ca.com/)
 * [Broadcom](https://www.broadcom.com/)
-* [MIT](http://web.mit.edu/)
 * [iboss](https://www.iboss.com/)
+* [MIT](http://web.mit.edu/)
 * [Akamai](https://www.akamai.com/)
 * [VMware](http://www.vmware.com/)
+* [Jana](http://jana.com/)
 * [Raid The Room](http://raidtheroom.com/)
 * [Harvard Medical School](http://hms.harvard.edu/)
 * And more...