Update OS X setup with workaround for 10.6.8

[bridgethillyer]

Whatever was keeping Light Table from working on OS X 10.6.8 seems to have been resolved. So if you do the following, LT should be able to run:

"remov[e] key "LSMinimumSystemVersion" from Info.plist"

[bridgethillyer]

Here's what needs to be added:

Troubleshooting

Using Light Table on 10.6.8

Light Table actually does work on OS X 10.6.8. It thinks it does not. To convince it otherwise, do this:

• Use a text editor to open /Applications/LightTable.app/Contents/Info.plist
• Search for the key LSMinimumSystemVersion
• Remove that key from the file. Delete this entire text:
  LSMinimumSystemVersion
  10.7.5
• Save the file, and you should be able to start Light Table.

[yokolet]

The troubleshooting section has been added to https://github.com/ClojureBridge/curriculum/blob/gh-pages/outline/setup_osx.md .
I'm going to close this issue.