update travis

Author: bpostlethwaite

.travis.yml

@@ -0,0 +1,17 @@
+language: julia
+os:
+  - linux
+  - osx
+julia:
+  - release
+  - nightly
+notifications:
+  email: false
+before_install:
+    - sudo add-apt-repository ppa:staticfloat/julia-deps -y
+    - sudo add-apt-repository ppa:staticfloat/${JULIAVERSION} -y
+    - sudo apt-get update -qq -y
+    - sudo apt-get install libpcre3-dev julia -y
+script:
+  - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
+  - julia --check-bounds=yes -e 'Pkg.clone(pwd()); Pkg.build("Plotly"); Pkg.test("Plotly"; coverage=true)'