Fix Travis CI notifications

.travis.yml

@@ -3,7 +3,7 @@ dist: trusty
 language: c
 notifications:
  irc:
-  channels: "anathema.irc.so#anathema"
+  channels: "irc.janouch.name#dev"
   use_notice: true
   skip_join: true
 env:
@@ -32,7 +32,7 @@ before_install:
  - sudo apt-get update -qq
 install:
  - sudo apt-get install -y libncursesw5-dev libreadline-dev libedit-dev
-   liblua5.3-dev help2man expect
+   liblua5.3-dev libffi-dev help2man expect
 before_script:
  - mkdir build
  - cd build