Update to nvm v0.16.1
Merge pull request #375 from ljharb/update_to_nvm_0_16_1

Update to nvm v0.16.1
Leiningen 2.5.0
Merge pull request #377 from michaelklishin/patch-4

Leiningen 2.5.0
Update memcached for PHP >= 5.3

memcached-2.2.0 is not compatible with 5.2.
Related to travis-ci/travis-ci#2743.