Merge pull request #8 from ethereum-mining/ci

Travis CI: don't install any dependencies

.travis.yml

@@ -6,16 +6,12 @@ matrix:
     include:
         - os: linux
           dist: trusty
-          sudo: required
         - os: osx
           osx_image: xcode8.3
 cache:
     ccache: true
     directories:
         - $HOME/.hunter
-install:
-    - if [ "$TRAVIS_OS_NAME" = "linux" ]; then sudo add-apt-repository -y ppa:ethereum/ethereum; sudo apt-get update; sudo apt-get install -y --no-install-recommends --allow-unauthenticated libjson-rpc-cpp-dev libjsoncpp-dev; fi
-    - if [ "$TRAVIS_OS_NAME" = "osx"   ]; then brew install libjson-rpc-cpp jsoncpp; fi
 script:
     - cmake -DETHASHCUDA=Off -DETHSTRATUM=On -DETHASHCL=On -H. -Bbuild
     - cmake --build build