Separate tap extensions by category

Previously, we grouped most extensions (even tap-bail) into 'pretty reporters'.

This groups extensions into human-friendly reporters, machine readable reporters,
error handling, and other. This helps users discover extensions.

readme.markdown

@@ -88,7 +88,7 @@ Please note that all modules loaded using the `-r` flag will run *before* any te
 
 tape maintains a fairly minimal core. Additional features are usually added by using another module alongside tape.
 
-## pretty reporters
+## reporters for humans
 
 The default TAP output is good for machines and humans that are robots.
 
@@ -98,26 +98,30 @@ that will output something pretty if you pipe TAP into them:
  - https://github.com/scottcorgan/tap-spec
  - https://github.com/scottcorgan/tap-dot
  - https://github.com/substack/faucet
- - https://github.com/juliangruber/tap-bail
  - https://github.com/kirbysayshi/tap-browser-color
- - https://github.com/gummesson/tap-json
  - https://github.com/gummesson/tap-min
  - https://github.com/calvinmetcalf/tap-nyan
- - https://www.npmjs.org/package/tap-pessimist
+ - https://github.com/clux/tap-pessimist
  - https://github.com/toolness/tap-prettify
  - https://github.com/shuhei/colortape
- - https://github.com/aghassemi/tap-xunit
  - https://github.com/namuol/tap-difflet
- - https://github.com/gritzko/tape-dom
  - https://github.com/axross/tap-diff
  - https://github.com/axross/tap-notify
  - https://github.com/zoubin/tap-summary
+
+You use these reporters by piping the tape output into them. For example,
+try `node test/index.js | tap-spec`.
+
+## reporters for other file formats
+
+ - https://github.com/gummesson/tap-json
+ - https://github.com/aghassemi/tap-xunit
+ - https://github.com/gritzko/tape-dom
  - https://github.com/Hypercubed/tap-markdown
 
-To use them, try `node test/index.js | tap-spec` or pipe it into one
-of the modules of your choice!
+## failing assertions
 
-## uncaught exceptions
+If any assertions fail, tape will continue. To terminate on the first failure, see [tap-bail](https://github.com/juliangruber/tap-bail).
 
 By default, uncaught exceptions in your tests will not be intercepted, and will cause tape to crash. If you find this behavior undesirable, use [tape-catch](https://github.com/michaelrhodes/tape-catch) to report any exceptions as TAP errors.
 
@@ -126,6 +130,7 @@ By default, uncaught exceptions in your tests will not be intercepted, and will
 - CoffeeScript support with https://www.npmjs.com/package/coffeetape
 - Promise support with https://www.npmjs.com/package/blue-tape
 - ES6 support with https://www.npmjs.com/package/babel-tape-runner
+- Inclue time information with https://github.com/diasdavid/timed-tape
 
 # methods