new version

• Null Pointer Exception on HTTP request with No Content in response and printResponse = true
• adding new line to printResponse

implement option replacement in the request body

Merge pull request #2 from EugenMayer/master

implement option replacement in the request body

Add proxy support

Add proxy support on the Http call step

New Features

• Pass headers using JSON or YML format (ohioit#3)
• Pass body text
• Print the response on rundeck
• Print the response to a file
• Move the authentication fields to the job level
• getting the authentication password from the key storage
• Use options in remote URL (ohioit#1)