Add modification warning to templated files

gRPC-Core.podspec

-# GRPC CocoaPods podspec
-# This file has been automatically generated from a template file. Please make modifications to
-# `templates/gRPC-Core.podspec.template` instead. This file can be regenerated from the template by
-# running `tools/buildgen/generate_projects.sh`.
+# This file has been automatically generated from a template file.
+# Please make modifications to `templates/gRPC-Core.podspec.template`
+# instead. This file can be regenerated from the template by running
+# `tools/buildgen/generate_projects.sh`.
 
+# gRPC Core CocoaPods podspec
+#
 # Copyright 2015, Google Inc.
 # All rights reserved.
 #

gRPC-ProtoRPC.podspec

+# This file has been automatically generated from a template file.
+# Please make modifications to
+# `templates/gRPC-ProtoRPC.podspec.template` instead. This file can be
+# regenerated from the template by running
+# `tools/buildgen/generate_projects.sh`.
+
 # Copyright 2015, Google Inc.
 # All rights reserved.
 #

gRPC-RxLibrary.podspec

+# This file has been automatically generated from a template file.
+# Please make modifications to
+# `templates/gRPC-RxLibrary.podspec.template` instead. This file can be
+# regenerated from the template by running
+# `tools/buildgen/generate_projects.sh`.
+
 # Copyright 2015, Google Inc.
 # All rights reserved.
 #

gRPC.podspec

+# This file has been automatically generated from a template file.
+# Please make modifications to `templates/gRPC.podspec.template`
+# instead. This file can be regenerated from the template by running
+# `tools/buildgen/generate_projects.sh`.
+
 # Copyright 2015, Google Inc.
 # All rights reserved.
 #

src/objective-c/!ProtoCompiler-gRPCPlugin.podspec

-# CocoaPods podspec for the gRPC Proto Compiler Plugin
+# This file has been automatically generated from a template file.
+# Please make modifications to
+# `templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template`
+# instead. This file can be regenerated from the template by running
+# `tools/buildgen/generate_projects.sh`.
 
+# CocoaPods podspec for the gRPC Proto Compiler Plugin
+#
 # Copyright 2016, Google Inc.
 # All rights reserved.
 #

src/objective-c/GRPCClient/private/version.h

@@ -31,4 +31,7 @@
  *
  */
 
+/* This file is autogenerated from template:
+ * templates/src/objective-c/GRPCClient/private/version.h.template */
+
 #define GRPC_OBJC_VERSION_STRING @"1.1.0-dev"

templates/gRPC-Core.podspec.template

 %YAML 1.2
 --- |
-  # GRPC CocoaPods podspec
-  # This file has been automatically generated from a template file. Please make modifications to
-  # `templates/gRPC-Core.podspec.template` instead. This file can be regenerated from the template by
-  # running `tools/buildgen/generate_projects.sh`.
+  # This file has been automatically generated from a template file.
+  # Please make modifications to `templates/gRPC-Core.podspec.template`
+  # instead. This file can be regenerated from the template by running
+  # `tools/buildgen/generate_projects.sh`.
 
+  # gRPC Core CocoaPods podspec
+  #
   # Copyright 2015, Google Inc.
   # All rights reserved.
   #

templates/gRPC-ProtoRPC.podspec.template

 %YAML 1.2
 --- |
+  # This file has been automatically generated from a template file.
+  # Please make modifications to
+  # `templates/gRPC-ProtoRPC.podspec.template` instead. This file can be
+  # regenerated from the template by running
+  # `tools/buildgen/generate_projects.sh`.
+
   # Copyright 2015, Google Inc.
   # All rights reserved.
   #

templates/gRPC-RxLibrary.podspec.template

 %YAML 1.2
 --- |
+  # This file has been automatically generated from a template file.
+  # Please make modifications to
+  # `templates/gRPC-RxLibrary.podspec.template` instead. This file can be
+  # regenerated from the template by running
+  # `tools/buildgen/generate_projects.sh`.
+
   # Copyright 2015, Google Inc.
   # All rights reserved.
   #

templates/gRPC.podspec.template

 %YAML 1.2
 --- |
+  # This file has been automatically generated from a template file.
+  # Please make modifications to `templates/gRPC.podspec.template`
+  # instead. This file can be regenerated from the template by running
+  # `tools/buildgen/generate_projects.sh`.
+
   # Copyright 2015, Google Inc.
   # All rights reserved.
   #

templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template

 %YAML 1.2
 --- |
-  # CocoaPods podspec for the gRPC Proto Compiler Plugin
+  # This file has been automatically generated from a template file.
+  # Please make modifications to
+  # `templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template`
+  # instead. This file can be regenerated from the template by running
+  # `tools/buildgen/generate_projects.sh`.
 
+  # CocoaPods podspec for the gRPC Proto Compiler Plugin
+  #
   # Copyright 2016, Google Inc.
   # All rights reserved.
   #

templates/src/objective-c/GRPCClient/private/version.h.template

@@ -32,5 +32,8 @@
    * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    *
    */
-  
+
+  /* This file is autogenerated from template:
+   * templates/src/objective-c/GRPCClient/private/version.h.template */
+
   #define GRPC_OBJC_VERSION_STRING @"${settings.version}"