Update .travis.yml for MacVim

Fix Perl and Python3 dylib loading path

Author: splhack

.travis.yml

@@ -14,6 +14,8 @@ env:
     VERSIONER_PYTHON_VERSION=2.7
     vi_cv_path_python3=/usr/local/bin/python3
     vi_cv_path_plain_lua=/usr/local/bin/lua
+    vi_cv_dll_name_perl=/System/Library/Perl/5.16/darwin-thread-multi-2level/CORE/libperl.dylib
+    vi_cv_dll_name_python3=/usr/local/Frameworks/Python.framework/Versions/3.5/Python
     "CONFOPT='--with-features=huge --enable-multibyte --enable-netbeans --with-tlib=ncurses --enable-cscope --enable-perlinterp=dynamic --enable-pythoninterp=dynamic --enable-python3interp=dynamic --enable-rubyinterp=dynamic --enable-luainterp=dynamic --with-lua-prefix=/usr/local --enable-gui=macvim'"
 
 sudo: false