Added samplecode as an include directory for SampleApp.gyp

git-svn-id: http://skia.googlecode.com/svn/trunk@2107 2bbb7eff-a529-9590-31e7-b0007b416f81

gyp/SampleApp.gyp

@@ -12,6 +12,7 @@
         '../src/core', # needed to get SkConcaveToTriangle, maybe this should be moved to include dir?
         '../gm',       # SampleGM.cpp pulls gm.h
         '../include/pipe', # To pull in SkGPipe.h for pipe reader/writer
+        '../samplecode', # To pull SampleApp.h and SampleCode.h
       ],
       'sources': [
         # gm files needed for SampleGM.cpp