Fix Travis-related scripts (#1089)

* Fix update_docs_version.sh to update also nested READMEs

* Update credentials for Travis to push to github

.travis.yml

@@ -14,8 +14,8 @@ after_success:
 - utilities/after_success.sh
 env:
   global:
-  - secure: "bjyc4GJSP9850m6KSO2LiGKMJI/iFJ6dIDNrrZJHiokWUv8ID5+X7O04YtAFF+WrYyVDJ8Zs+uduAJaQ5NFesnhFjMMNTOaliYIBjpBgdZU0vgmsU0NzO35bu6wA5DAdI8AGUNCVwSZpOAMnj/80dbYbyFwBn2DWBZ3QwpV6J/I="
-  - secure: "CUM2l73KFm7U4eDsUKkh1WyEUzF3v94Ltvs7MnKU9olE1dNp3YmRBL9Lqhx3hSDqm/xv0ETQsPy29Fs2+VFkhQQxSley6iS/4trr2fioTB680txfXo/zDdmGSP1q1/U40fv1S+jvuBRAhDV5W+8dhWOGtzMH0tJp/TszeDGlmCY="
+  - secure: "IvdIao/ZBKZ7KcMdbnbpPH5dyujVnr1PAlE9hV+Nu5YujloIDUqTFpSFXB+wnp0CLMlW2kBR6YBhh71mp5M2XSqf+PtWB3b+ts7oz1vwhfUI857P5lMBHapekkNJk874sMjPdAUIprRnRBmVBfZVLMrSDE7LKqnuHXZjSkDGFYk="
+  - secure: "XCtBrBNHGL+c55erAzMGgfCbS7dXSAFrMqIQCiPD6ib9rde3G8aDMvsseY7jSO2ygspB4ubVr+WqNkC5yHMcNUQvkX/auNpSkJbzBFG/2lhC9NBvBAiFJZn5jmcVnQ19vgO2Zjd37B1NrIwT7sW49eVeG0zn/A+qRxWeagPy3SQ="
   - secure: "YBbdzseg5yDFpQIiMoc3P2BTmqef4o+KAvrLMEbobXjIkiglUQ7UHCoRWClX74fTKAwuC7JvK7o5xJGLnaY43jJADXrGtE8/d44HNJaieE67mNosDYtOiA0iI2uIRFCAnXJCZ8f/iHx2xVMHMNWlwyoil4IUcjj+D7FRcsT5alE="
   - secure: "Od7BwllgFXVfzFe8ooTNm05TR+Xd5QjHW0oqhU8vclaQs2oX4e0eNIsebXQfLi3xDgd1pz5uUQC/Z4S0NqACwyUuUvPdGYYmRPTR7Dh8HgGJ4ojSdN3RwaHsxUqG7Ajts9rIHOtRpY28xOChVRNX0Z7eAPlvxYU4Ed2ZEo356r0="
   - secure: "ROxa8HHuba+Dfixljq6poW1+Uwv8EaZUtTTTB7KEtAHJRN8rwoNS4TC0U0PEHcYAL+ivxP3zIfWOCoWreJGoa+V8y9BtLSuamUj/SSsuoHRdJjq5BmcHI/77P11HAzCH6Ul/GxsRB52/IRHwJyfKkh8XUMVSsCl7AG4CKUgt63Y="

utilities/update_docs_version.sh

@@ -11,14 +11,17 @@ if [ "${RELEASED_VERSION##*-}" != "SNAPSHOT" ]; then
     echo "Changing version to $RELEASED_VERSION in README files"
     # Get list of directories for which README.md must be updated
     module_folders=($(find . -maxdepth 2 -type d | sed -E -n "/^\.\/(gcloud-java-contrib\/)?gcloud-java(-[a-z]+)+$/p") . ./gcloud-java)
+    readmes=""
     for item in ${module_folders[*]}
     do
-        sed -ri "s/<version>[0-9]+\.[0-9]+\.[0-9]+<\/version>/<version>${RELEASED_VERSION}<\/version>/g" ${item}/README.md
-        sed -ri "s/:[0-9]+\.[0-9]+\.[0-9]+'/:${RELEASED_VERSION}'/g" ${item}/README.md
-        sed -ri "s/\"[0-9]+\.[0-9]+\.[0-9]+\"/\"${RELEASED_VERSION}\"/g" ${item}/README.md
+        if [ -f ${item}/README.md ]; then
+            sed -ri "s/<version>[0-9]+\.[0-9]+\.[0-9]+<\/version>/<version>${RELEASED_VERSION}<\/version>/g" ${item}/README.md
+            sed -ri "s/:[0-9]+\.[0-9]+\.[0-9]+'/:${RELEASED_VERSION}'/g" ${item}/README.md
+            sed -ri "s/\"[0-9]+\.[0-9]+\.[0-9]+\"/\"${RELEASED_VERSION}\"/g" ${item}/README.md
+            readmes="$readmes ${item}/README.md"
+        fi
     done
-
-    git add README.md */README.md
+    git add $readmes
     git config --global user.name "travis-ci"
     git config --global user.email "travis@travis-ci.org"
     git commit -m "Updating version in README files. [ci skip]"