Please update README or add wiki page for Mac users

[jovezhong]

First of all, thanks for the great work.

It took me 2 hours to figure out how to run it on Mac. Sorry I am not familiar with C++ or wx framework.

It will be cool if you can update the README.md or add a new wiki page to list the steps of running it on Mac.

Here is a few step I did tonight:

• git clone the code on Mac, open the project in Xcode
• use home-brew to install wx: brew install wxmac
• run the project in Xcode. there should be no compiling error but you won't get anything log, since your account cannot capture the network traffic
• build&archive the project. In organizer, click 'Distribute..'-> Export as Application. Save the 'Hearth Log.app' to somewhere and copy it to /Application
• register an account on http://www.hearthlog.com/, copy the Upload Key
• create a file with 1 line content: UploadKey=, save it to ~/Library/Application Support/Hearth Log/config.ini
• sudo /Applications/Hearth\ Log.app/Contents/MacOS/Hearth\ Log
• Then start the game and play with others. After you quit the game, the log will be saved and uploaded to website. You can check the log at ~/Library/Application Support/Hearth Log/log.txt

Hope it helps.

[postcasio]

Just a note, the version of wx installed by homebrew is now 3.0.0.0.

The xcodeproj needs to be updated to replace /usr/local/Cellar/wxmac/2.9.5.0/ with /usr/local/Cellar/wxmac/3.0.0.0/ and -lwx_osx_cocoau-2.9 with -lwx_osx_cocoau-3.0 to build.

It seems to work fine with the new version. I'll submit a patch later on today.