Update .travis.yml

.travis.yml

@@ -8,7 +8,7 @@ before_install:
 
 install:
   - sudo apt-get -y install build-essential fuse zsync desktop-file-utils
-  - sudo apt-get -y install qt57base qt57svg qt57quickcontrols qt57quickcontrols2
+  - sudo apt-get -y install qt57base qt57svg qt57declarative qt57quickcontrols
   # Replace linuxdeployqt download URL to official download URL when the stable version released
   - curl -L -o linuxdeployqt https://dl.dropboxusercontent.com/u/150776/temp/linuxdeployqt-799f704-x86-64.appimage
   - sudo install -m 755 -p linuxdeployqt /usr/local/bin/linuxdeployqt