simplify travis.yml

.travis.yml

@@ -4,13 +4,11 @@ compiler:
 notifications:
     email: false
 before_install:
-    - sudo apt-get update -qq -y
-    - sudo apt-get install zlib1g-dev
     - sudo add-apt-repository ppa:staticfloat/julia-deps -y
     - sudo add-apt-repository ppa:staticfloat/julianightlies -y
     - sudo apt-get update -qq -y
-    - sudo apt-get install patchelf gfortran llvm-3.2-dev libsuitesparse-dev libncurses5-dev libopenblas-dev liblapack-dev libarpack2-dev libfftw3-dev libgmp-dev libpcre3-dev libunwind7-dev libreadline-dev libdouble-conversion-dev libopenlibm-dev librmath-dev -y
-    - sudo apt-get install julia
+    - sudo apt-get upgrade -y
+    - sudo apt-get install julia -y
     - git config --global user.name "Dummy Travis User"
     - git config --global user.email "[email protected]"
 script: