Check for actual additions

.travis.yml

@@ -46,9 +46,6 @@ cache:
   - $HOME/.cabal/packages
   - $HOME/.cabal/store
 
-os:
-- linux
-
 env:
   global:
     - ENCRYPTION_LABEL: "3c89d919c82e"

deploy.sh

@@ -30,7 +30,7 @@ git checkout $TARGET_BRANCH || git checkout --orphan $TARGET_BRANCH
 cd ..
 
 # Clean out existing contents
-rm -rf $OUT/* || exit 0
+# rm -rf $OUT/* || exit 0
 
 # Run our compile script
 doCompile
@@ -40,6 +40,12 @@ cd $OUT
 git config user.name "Travis CI"
 git config user.email "$COMMIT_AUTHOR_EMAIL"
 
+# If there are no changes to the compiled out (e.g. this is a README update) then just bail.
+if [ -z `git diff --exit-code` ]; then
+    echo "No changes to the output on this push; exiting."
+    exit 0
+fi
+
 # Commit the "changes", i.e. the new version.
 # The delta will show diffs between new and old versions.
 git add -A