Brackets Shell was not building on Debug on Mac (#657)

Author: vickramdhawal

appshell.gyp

@@ -533,6 +533,9 @@
               '$(SDKROOT)/System/Library/Frameworks/ScriptingBridge.framework',
               '$(SDKROOT)/System/Library/Frameworks/Security.framework',
               '$(CONFIGURATION)/<(framework_name).framework/<(framework_name)',
+              'deps/icu/lib/libicuuc.a',
+              'deps/icu/lib/libicui18n.a',
+              'deps/icu/lib/libicudata.a',
             ],
           },
           'sources': [

appshell_paths.gypi

@@ -194,12 +194,12 @@
       'appshell/client_handler.h',
       'appshell/native_menu_model.cpp',
       'appshell/native_menu_model.h',
+      'appshell/update.h',
+      'appshell/update.cpp',
     ],
     'appshell_sources_common': [
       'appshell/cefclient.cpp',
       'appshell/cefclient.h',
-      'appshell/update.h',
-      'appshell/update.cpp',
       '<@(appshell_sources_common_helper)',
     ],
     'appshell_sources_common_linux': [
@@ -310,6 +310,7 @@
       'appshell/appshell_helpers_mac.mm',
       'appshell/client_handler_mac.mm',
       'appshell/process_helper_mac.cpp',
+      'appshell/update_mac.mm',
       '<@(appshell_sources_common_helper)',
       '<@(appshell_sources_renderer)',
     ],