Merge tag 'v2.5.0'

2.5.0

 * compiler: resolve paths in middleware params (Miroslav Bajtoš)
Replace underscore with lodash

Replace 2 uses of underscore and 1 use of a lodash submodule with full
lodash module.
Merge pull request #76 from strongloop/feature/remove-underscore

Replace underscore with lodash
v2.5.1
Merge branch 'release/2.5.1' into production