Fix more broken image links in old docs

Docs/Markdown/Compiling Overgrowth on modern OS X.md

@@ -33,7 +33,7 @@ to avoid having to manually change the Base SDK in Xcode.
 
 So Configure to use Xcode and then generate into your choice of build directory.  
 
-![CMake GUI](/img/OSXCMake/1-OSXCMake-CMake.png)
+![CMake GUI](img/OSXCMake/1-OSXCMake-CMake.png)
 
 Now the fun begins.
 
@@ -43,15 +43,15 @@ Now the fun begins.
 
 2. We need to change the target to Overgrowth as it'll build a bunch of superfluous projects instead.
 
-![Change Target](/img/OSXCMake/2-OSXCMake-Target.png)
+![Change Target](img/OSXCMake/2-OSXCMake-Target.png)
 
 3. Note that by default it'll compile Debug, so you may want to change this to Release.  To bring up scheme quickly hit **command-<**.
 
-![alt text](/img/OSXCMake/3-OSXCMake-Release.png)
+![alt text](img/OSXCMake/3-OSXCMake-Release.png)
 
 4. If we built at this point we'd have a whole bunch of strange errors.  Since the project CMake generates may as well have been written on cuneiform tablets from the point of view of Xcode, we have to update the project.  First select the Overgrowth project from the lefthand column (or the menu item won't appear) and select **Editor|Validate Settings**.  It'll present a long list of proposed changes -- accept them.
 
-![Validate Settings](/img/OSXCMake/5-OSXCMake-Validate.png)
+![Validate Settings](img/OSXCMake/5-OSXCMake-Validate.png)
 
 5. Now we have to undo some of what the previous step did.  Select the Overgrowth project from the lefthand column (**Project Navigator**).  Again, select the the **Overgrowth** project from the lefthand column of the center pane and then change the view to **Combined**.  Change the **Architectures** to **32-bit Intel (i386)** and for good measure remove **x86**64** from the **Valid Architectures.  In order to remove another dumb bit of CMake screwup change the **Base SDK** to **Latest OS X**. If you added the Cmake command line option above this should not be necessary.
 Don't worry about this restricting your build to the latest OS, Apple has changed the way the platform SDKs work.  All the supported SDKs have been amalgamated.  The actual OS X version is determined below by changing **OS X Deployment Target** in the **Deployment** section (this will default to 10.6).  (Note that this is new in Xcode 7 -- things are a bit simpler in Xcode 6).
@@ -62,15 +62,15 @@ If you hit Build at this point -- you should get a successful compile.  In order
 
 1. First set we need to set a custom Working Directory. This is set in the scheme (again **command-<**).  Under **Options** find **Working Directory** and select the root of Overgrowth Data folder (the one currently in Dropbox).
 
-![Change Working Directory](/img/OSXCMake/7-OSXCMake-Working Directory.png)
+![Change Working Directory](img/OSXCMake/7-OSXCMake-Working%20Directory.png)
 
 2. Now for the biggest hack.  Still in the scheme go back to **Info** and look at executable.  This **looks** like it's the Overgrowth executable, but this is the one that's built original, not the one that CMake's custom scripts move into the application bundle.  So we need to point this at the executable in the bundle.  The annoying part is that we can't **Show Package Contents** in the selection dialog box -- so we need to work around this somehow.  Go into finder, go to the Release directory in the root of your build directory.  Assuming you've built the application you should see two executables and the actual app bundle. Right click and **Show Package Contents** and go into Contents and then (temporarily) drag the MacOS folder to Finder sidebar. 
 
-![Finder Hack](/img/OSXCMake/8-OSXCMake-Finder.png)
+![Finder Hack](img/OSXCMake/8-OSXCMake-Finder.png)
 
 3.  Back in Xcode with scheme and **Info** and under **Executable** scroll down till you find **Other...**.  A selection window will come up and you show the sidebar (if you need to) to find the MacOS folder from the last step.  Selecting this will show inside the bundle and **now** you can select the overgrowth executable. 
 
-![Change Executable](/img/OSXCMake/9-OSXCMake-Executable.png)
+![Change Executable](img/OSXCMake/9-OSXCMake-Executable.png)
 
 4. Finally, if you haven't done so go to **/Users/*<username>*/Library/Application Support/Overgrowth** and fill in the **extra_data_path** in config.txt to be the root of your *source* directory (i.e. the one from git). On my system this is: