Added missing title tag to Distribution xml files.

Author: PropGit

package/mac-resources/Distribution.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8" standalone="no"?>
 <installer-gui-script minSpecVersion="1">
+    <title>Parallax BlocklyProp Launcher</title>
     <pkg-ref id="com.ParallaxInc.BlocklyPropLauncher"/>
     <options customize="never" require-scripts="false"/>
     <choices-outline>

package/mac-resources/DistributionFTDI.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8" standalone="no"?>
 <installer-gui-script minSpecVersion="1">
+    <title>Parallax BlocklyProp Launcher</title>
     <pkg-ref id="com.ParallaxInc.BlocklyPropLauncher"/>
     <pkg-ref id="com.FTDI.driver.FTDIUSBSerialDriver"/>
     <options customize="never" require-scripts="false"/>