ObjC Support a runtime import override.
Option to add a prefix to generated #imports incase ObjC Protos are
used in a build system where one wants to avoid adding a header
search path and have more complete imports.
diff --git a/objectivec/README.md b/objectivec/README.md
index 69fe631..5982939 100644
--- a/objectivec/README.md
+++ b/objectivec/README.md
@@ -172,6 +172,12 @@
lot of proto files included in it; and having multiple lines makes things
easier to read.
+ * `runtime_import_prefix`: The `value` used for this key to be used as a
+ prefix on `#import`s of runtime provided headers in the generated files.
+ When integrating ObjC protos into a build system, this can be used to avoid
+ having to add the runtime directory to the header search path since the
+ generate `#import` will be more complete.
+
Contributing
------------
