Sup is a very good email program written by William Morgan (and
others) and is the direct inspiration for Notmuch. Notmuch began as
an effort to rewrite performance-critical pieces of Sup in C rather
- than ruby. From there, it grew into a separate project. One
+ than Ruby. From there, it grew into a separate project. One
significant contribution Notmuch makes compared to Sup is the
separation of the indexer/searcher from the user interface. (Notmuch
provides a library interface so that its indexing/searching/tagging
page](https://www.openhub.net/p/notmuch) has a nice summary of the codebase and
activity.
-We have a [buildbot](http://buildbot.notmuchmail.org/grid) (here's
-its
-[configuration](https://github.com/tomprince/buildbot-configs/tree/notmuch)).
+Continuous integration build and test suite status: [![Build Status](https://travis-ci.org/notmuch/notmuch.svg?branch=master)](https://travis-ci.org/notmuch/notmuch)
Contributions, such as patches, to Notmuch are most welcome. Please refer to the
[[guide to contributing|contributing]].