Adding NSHighResolutionCapable to Mac Info.plist file.

Apparently this makes things look or work better on the new MacBook Pro w/ Retina display.

http://code.google.com/p/arduino/issues/detail?id=982

Author: damellis

build/macosx/template.app/Contents/Info.plist

@@ -14,6 +14,8 @@
     <string>VERSION</string>
     <!-- now stop changing things and get outta here -->
 
+    <key>NSHighResolutionCapable</key>
+    <true/>
     <key>CFBundleAllowMixedLocalizations</key>
     <string>true</string>
     <key>CFBundleExecutable</key>