Add 'no longer maintained' to README.md and website, link to maintained version of software

[mikemaccana]

The current 'official' version of mongohub at https://github.com/bububa/MongoHub-Mac and http://mongohub.todayclose.com/ is 2.3.2. This version crashes regularly on the current version of OS X and has not been maintained for many years. Despite that, the software itself responds that it is the latest version of MonhoHub available.

There is a fork at https://github.com/fotonauts/MongoHub-Mac which is maintained. It would be responsible to officially hand over maintenance of mongohub to @fotonauts.

• Update the README.md to state the project is no longer maintained, and add a link to https://github.com/fotonauts/MongoHub-Mac for the maintained version
• Update http://mongohub.todayclose.com to point to the maintained version.

From http://catb.org/esr/writings/homesteading/homesteading/ar01s04.html:

It is well understood in the community that project owners have a duty to pass projects to competent successors when they are no longer willing or able to invest needed time in development or maintenance work.

[driq]

+1