Use github.token config for auth

Author: Austin Green

utils/scripts/version.sh

@@ -1,12 +1,16 @@
 #!/bin/sh
 
-set -e
+# Set auth variable for lerna-changelog and github-release.js
+GITHUB_AUTH=$(git config github.token)
 
-if [[ -z "$GITHUB_AUTH" ]]; then
-    echo "ERROR: Must provide GITHUB_AUTH token in environment"
+if [[ -z $GITHUB_AUTH ]]; then
+    echo "ERROR: Must provide 'github.token' in git configuration"
     exit 1
 fi
 
+# Exit on error
+set -e
+
 echo "INFO: Pulling recent changes..."
 git pull