Include info for Mac users in Wiki and/or comments

[jlamson]

tl;dr Help out Mac users please :)

I'm moving through the Wiki to try modding, and there's a few tweaks for Mac users in the Adding Dependencies

• For the Steam.path, mac users should look in /Users/{yourUser}/Library/Application Support/Steam/steamapps/
• All the systemPath values for the modthespire, basemod, and StSLib worked correctly
• For desktop-1.0.jar, the path provided won't work. On mac, everything's bundled in SlayTheSpire.app. If you right click that file in finder and select "Show Package Contents", you can see there's a buncha stuff within the app. The path for mac users should be ${Steam.path}/common/SlayTheSpire/SlayTheSpire.app/Contents/Resources/desktop-1.0.jar
• For the package configuration, the tofile in needs to be in the Resources/mods folder: <copy file="target/${project.artifactId}.jar" tofile="${Steam.path}/common/SlayTheSpire/SlayTheSpire.app/Contents/Resources/mods/${project.artifactId}.jar"/>

The above could be added as additional notes in the wiki page linked above, or perhaps as commented out lines like the local ../lib/ paths are

Edit: Found another one that maybe is clear and I just didn't get it. In the Setting up debugging step, the "intstall directory" is also buried in the .app folder. I had to set it to pathToSteam/common/SlayTheSpire/SlayTheSpire.app/Contents/Resources, as that had the jre/bin/java path in it that MtS needs to run.