Add comment at top of freetype.gyp.

This tells VI to use colors when viewing.

R=djsollen@google.com

Author: scroggo@google.com

Review URL: https://codereview.chromium.org/138123007

git-svn-id: http://skia.googlecode.com/svn/trunk@13134 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/freetype.gyp b/gyp/freetype.gyp
index 41f3b57..b0957d0 100644
--- a/gyp/freetype.gyp
+++ b/gyp/freetype.gyp
@@ -1,3 +1,4 @@
+# Target for building freetype.
 {
   'targets': [
     {