Fix typo.

Merge pull request #10 from bet365/feature/enable-toggling-tstamp-exp…

…iration

Update tag and lock for kv/bitcask.

updated rebar lock

bump version of kv,pb,api for new version issue with gpb.

git for 3.1.

update pb dep in lock.

correct pid dir for rpm in rebar.config.

Updated rebar config and lock file to reflect riak_core 2.2.13 bug fi…

…x to worker_pool

updated lock

Updated lock file