Merge pull request #108 from mcgoo/master

run travis builds on osx also

.travis.yml

@@ -4,7 +4,11 @@ rust:
     - stable
     - beta
     - nightly
+os:
+    - linux
+    - osx
 script:
-    - cargo build --verbose
-    - cargo test --verbose
-    - cargo test --release --verbose
+    - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then FAKETTY="script -q /dev/null"; fi
+    - $FAKETTY cargo build --verbose
+    - $FAKETTY cargo test --verbose
+    - $FAKETTY cargo test --release --verbose