add note to update dependent package.json when releasing openwhisk-client-js (#312)

diff --git a/docs/release_instructions.md b/docs/release_instructions.md
index 01b776b..35cb28f 100644
--- a/docs/release_instructions.md
+++ b/docs/release_instructions.md
@@ -245,6 +245,14 @@
 credentials found in the npmjs.txt file in the accounts subdir of the
 PMC private svn.
 
+If you are releasing a new version of the openwhisk-client-js package,
+then after the new version of the `openwhisk` package is published on
+npm, submit PRs to update the version number for the openwhisk package
+in the package.json files found in the openwhisk, openwhisk-composer
+and openwhisk-runtime-nodejs git repos.  The command
+`find . -name package.json -exec grep -l \"openwhisk\": {} \;`
+can help you find all the places to change.
+
 ### Homebrew
 
 If you released a new version of openwhisk-cli, then submit a PR