README.md & Travis cleanup

Remove the IRC notifications from Travis (we're not using IRC anymore), and the
stable/experimental badge from README.md (because they aren't being kept up to date).

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

.travis.yml

@@ -7,13 +7,6 @@ install:
 script:
   - make travis-test BOARD_HARDWARE_PATH=$(pwd)/hardware
 notifications:
-  irc:
-    channels:
-      - "chat.freenode.net#keyboardio"
-    use_notice: true
-    skip_join: true
-    template:
-      - "%{repository_name}/%{branch} %{commit} by %{author}: %{commit_subject} %{build_url} %{message}"
   email:
     on_success: change
     on_failure: change

README.md

@@ -1,14 +1,10 @@
 # Kaleidoscope-Unicode
 
-![status][st:stable] [![Build Status][travis:image]][travis:status]
+[![Build Status][travis:image]][travis:status]
 
  [travis:image]: https://travis-ci.org/keyboardio/Kaleidoscope-Unicode.svg?branch=master
  [travis:status]: https://travis-ci.org/keyboardio/Kaleidoscope-Unicode
 
- [st:stable]: https://img.shields.io/badge/stable-✔-black.svg?style=flat&colorA=44cc11&colorB=494e52
- [st:broken]: https://img.shields.io/badge/broken-X-black.svg?style=flat&colorA=e05d44&colorB=494e52
- [st:experimental]: https://img.shields.io/badge/experimental----black.svg?style=flat&colorA=dfb317&colorB=494e52
-
 The `Unicode` extension makes it easier to write plugins that input Unicode
 symbols on the host. Because inputting Unicode varies from OS to OS, this helper
 library was made to hide most of the differences. All one has to do, is set up