correctly assign bash variable

.travis.yml

@@ -17,7 +17,7 @@ install:
 before_script:
   - avr-gcc --version
 script:
-- make test AUTOGEN=false
+- make test AUTOGEN="false"
 - bash util/travis_build.sh
 addons:
   apt:

util/travis_build.sh

@@ -7,12 +7,12 @@ if [[ "$TRAVIS_COMMIT_MESSAGE" != *"[skip build]"* ]] ; then
 	NEFM=$(git diff --name-only -n 1 ${TRAVIS_COMMIT_RANGE} | grep -Ev '^(keyboards/)' | wc -l)
 	if [[ $NEFM -gt 0 ]] ; then
 		echo "Making all keymaps for all keyboards"
-		make all-keyboards AUTOGEN=true
+		make all-keyboards AUTOGEN="true"
 	else
 		MKB=$(git diff --name-only -n 1 ${TRAVIS_COMMIT_RANGE} | grep -oP '(?<=keyboards\/)([a-zA-Z_]+)' | sort -u)
 		for KB in $MKB ; do
 			echo "Making all keymaps for $KB"
-			make "$KB" AUTOGEN=true
+			make "$KB" AUTOGEN="true"
 		done
 	fi
 fi