Update Readme about installing on Mavericks and Mountain Lion 

I just reinstalled Mountain Lion 10.8.5, and I only needed the extra file, and not to do any of the steps from part 1. So I've tested it both on fresh install of Mavericks 10.9 and Mountain Lion 10.8.5. Both installed CalCentral with no problem.
CLC-2727 - CFV - Use new summary designs
https://jira.media.berkeley.edu/jira/browse/CLC-2727
Merge pull request #1754 from christianv/CLC-2727

CLC-2727 - CFV - Use new summary designs
CLC-2764 - CFV Testing: many payments not appearing with semester filter set to "Payments"
https://jira.media.berkeley.edu/jira/browse/CLC-2764
CLC-2755 - CFV Testing: viewing transaction detail or balance detail in Chrome causes viewport to jump
https://jira.media.berkeley.edu/jira/browse/CLC-2755
Merge pull request #1756 from christianv/CLC-2755

CLC-2755 - CFV Testing: viewing transaction detail or balance detail in ...
Merge pull request #1755 from christianv/CLC-2764

CLC-2764 - CFV Testing: many payments not appearing with semester filter...
Merge pull request #1753 from jmanalus/patch-2

Update Readme about installing on Mavericks and Mountain Lion
CLC-2511 Enable Spring 2014 in Canvas course provisioning
Merge pull request #1757 from raydavis/raywip

CLC-2511 Enable Spring 2014 in Canvas course provisioning
[CLC-2728] - GPA Calculator - should calculate in your previous cumulative GPA
Merge pull request #1758 from haroonrasheed333/CLC-2728

[CLC-2728] - GPA Calculator - should calculate in your previous cumulative GPA
CLC-2773 - BUG - Login should be Login (uid) in basic auth form
CLC-2753 - "Order transcripts" should be "Order Transcripts" (capitalization)
Merge pull request #1759 from wonjunnn/CLC-2773

CLC-2773 - BUG - Login should be Login (uid) in basic auth form
Merge pull request #1760 from anair13/CLC-2753

CLC-2753 - "Order transcripts" should be "Order Transcripts"
CLC-2628 - Spinner issues on Firefox & Safari
https://jira.media.berkeley.edu/jira/browse/CLC-2628
Merge pull request #1761 from christianv/CLC-2628

CLC-2628 - Spinner issues on Firefox & Safari
CLC-2777 Add bCourses Course Provision API to smoke test blacklist
CLC-2756 Try to fix failing Capybara test