Let's move check-stub-map under tests folder

Root folder becomes cleaner and it's really a test for map

.travis.yml

@@ -17,4 +17,4 @@ install:
 script:
   - docker-compose -f docker-compose.yml pull
   - docker-compose -f docker-compose.yml run php /opt/project/phpstorm-stubs/vendor/bin/phpunit /opt/project/phpstorm-stubs/tests/
-  - ./check-stub-map
+  - ./tests/check-stub-map

tests/check-stub-map

@@ -10,7 +10,7 @@ php generate-stub-map
 readonly NEW_FILE_HASH=$(md5sum PhpStormStubsMap.php | awk '{ print $1 }')
 
 if [[ "${CURRENT_FILE_HASH}" != "${NEW_FILE_HASH}" ]]; then
-    echo "The commited stub map is not up to date. Please regenerate it using ./generate-stub-map.php";
+    echo "The commited stub map is not up to date. Please regenerate it using ./generate-stub-map";
 
     exit 1;
 fi