Merge pull request #6 from garryyao/develop

Post fixing upgraded to http-proxy 1.0.
Merge pull request #7 from garryyao/develop

Downgrade to http-proxy 0.x due to instability found in 1.x.
Bumped version to 0.2.5
Merge branch 'release/0.2.5' into develop
Update example  configuration.
v1.0.0