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Work from #122

MailDev will now shutdown it's internal services when the SIGTERM signal is signaled. This makes stopping the docker container much faster and it will exist with a 0 code instead of the previous error code.

Includes work from #120

Fixes issue where only the first inline image would be replaced (#116)

Includes work form #117.

Now using the alpine base image for Docker, dramatically reducing image size on Docker hub as of this release. Includes a bug fix for nodemailer from #111.

New documentation to show this added functionality.

Includes #98, #108, #109 and fixes for #97. Various dependencies updated to latest versions.

Includes the path fix in #107 which addresses compatibility with Node 5.7 (#106)

Includes fixes from #84, #85, #87 as well as a fix for #69

This includes new features from #78 and #81

This includes using a new smtp server for Node >= 0.12 and io.js. Includes #74, #77.

• Feature - Adding the ability to require authentication on the SMTP server (#58)
• Feature - Add ability to specify binding IP address for services (#63)
• Feature - Adding HTTP auth options (#59)
• Fix - Prevent full refresh of UI when deleting a single email (#61)