update travis.yml

.travis.yml

@@ -20,10 +20,10 @@ before_install:
  - gem install bundler
  - curl -sSL https://sh.rustup.rs | sh -s -- -y --default-toolchain=nightly --profile=minimal
  - export PATH="$PATH:$HOME/.cargo/bin"
- - sudo add-apt-repository ppa:beineri/opt-qt591-xenial -y
+ - sudo add-apt-repository ppa:beineri/opt-qt514-xenial -y
  - sudo apt-get update -qq
- - sudo apt-get install qt59base qt59websockets libgl1-mesa-dev
- - source /opt/qt59/bin/qt59-env.sh
+ - sudo apt-get install qt514base qt514websockets libgl1-mesa-dev
+ - source /opt/qt514/bin/qt514-env.sh
  - chmod +x res/libsodium/buildlibsodium.sh
 
 script: