Fix jslint warning for PAC.
Abstract copy2Server in serverWriter.
Avoid using too much memory to hold http request body.
Avoid using too small dial/read timeout for potentially blocked site.
Reduce blocked/direct delta.
Encapsulate actual error in RetryError.
Add debug code for retry with partial request.
Add error checking in handle retry.
Add basic authorization support for parent http proxy
adding authorization header for parent HTTP proxy only when sending the request to parent
Merge pull request #27 from tevino/http-parent-auth

Add basic authentication support for parent http proxy.
Also check command line option syntax.
Add acknowledgment, update CHANGELOG.
Change travis status image for develop branch.
Use error log if can't connect to parent proxy.
Clarify domain name usage in README.
Merge branch 'develop'