Add IRC notification of Travis builds.

I hope it's not too obnoxious.

.travis.yml

@@ -2,6 +2,16 @@ language: cpp
 
 cache: apt
 
+notifications:
+  irc:
+    channels:
+      - "chat.freenode.net#portapack"
+    template:
+      - "%{repository}#%{build_number} (%{branch} - %{commit} : %{author}): %{message}"
+      - "Change view : %{compare_url}"
+      - "Build details : %{build_url}"
+      - "Firmware download : https://portapack-h1-builds.s3.amazonaws.com/%{repository_slug}/%{build_number}/%{build_id}/firmware/portapack-h1-firmware-%{commit}.tar.bz2"
+
 before_script:
   - wget https://launchpad.net/gcc-arm-embedded/5.0/5-2015-q4-major/+download/gcc-arm-none-eabi-5_2-2015q4-20151219-linux.tar.bz2 -O /tmp/gcc-arm.tar.bz2
   - tar -xf /tmp/gcc-arm.tar.bz2