Merge pull request #24 from alterstep/master

libldns.1.dylib mode 755
Uninstall /usr/local/share/dnscrypt-proxy
Merge branch 'master' of github.com:opendns/dnscrypt-osx-client

* 'master' of github.com:opendns/dnscrypt-osx-client:
  libldns.1.dylib mode 755