Fix travis osx build.

.travis.yml

@@ -3,7 +3,7 @@ language: cpp
 os:
   - linux
   - osx
-osx_image: xcode7
+osx_image: xcode7.3
 
 env:
   matrix:
@@ -127,7 +127,7 @@ install:
         cp "version" $HOME/hombebrew_cache ;
         cd "$HOME/hombebrew_cache" ;
         wget https://builds.shiki.hu/homebrew/libtorrent-rasterbar.rb ;
-        wget https://builds.shiki.hu/homebrew/libtorrent-rasterbar-1.0.10.yosemite.bottle.tar.gz ;
+        wget https://builds.shiki.hu/homebrew/libtorrent-rasterbar-1.0.10.el_capitan.bottle.tar.gz ;
       fi
 
       # dependencies
@@ -137,7 +137,7 @@ install:
       # Copy custom libtorrent bottle to homebrew's cache so it can find and install it
       # Also install our custom libtorrent formula by passing the local path to it
       # These 2 files are restored from Travis' cache.
-      cp "$HOME/hombebrew_cache/libtorrent-rasterbar-1.0.10.yosemite.bottle.tar.gz" "$(brew --cache)" ;
+      cp "$HOME/hombebrew_cache/libtorrent-rasterbar-1.0.10.el_capitan.bottle.tar.gz" "$(brew --cache)" ;
       brew install "$HOME/hombebrew_cache/libtorrent-rasterbar.rb" ;
 
       # Qt