ensure Lager is compiled before requiring it
Update version
Update version reqs
Log requests
Fix missing symbol
Fix log
update for Elixir 0.15.x

use built-in Logger instead of Lager
remove exlager as dependency
update Elixir constraint
switch hackney dependency to hex hosted from github hosted
Merge pull request #6 from undeadlabs/elixir-15

Update for Elixir 0.15.x
Remove expm package.exs file
Bump version
Use json from hex.pm