Let the travis gem format the .travis.yml file

.travis.yml

@@ -1,19 +1,16 @@
 sudo: false
 language: rust
 rust:
-    - beta
-    - nightly
-    - stable
-
+- beta
+- nightly
+- stable
 cache: cargo
-
 matrix:
   allow_failures:
   - rust: nightly
   - rust: beta
-
 before_install:
-    - |
+- |
   c=$(git diff $(git merge-base master $TRAVIS_COMMIT)..$TRAVIS_COMMIT --name-only | cut -d "/" -f 1 | uniq)
   if [[ "$c" == "doc" ]]; then
       echo "Only changes in DOC, exiting 0"
@@ -22,14 +19,12 @@ before_install:
     echo "Changes in other directories than ./doc"
     echo "continue build..."
   fi
-
 before_script:
-    - |
+- |
   pip install 'travis-cargo<0.2' --user &&
   export PATH=$HOME/.local/bin:$PATH
-
 script:
-    - |
+- |
   travis_cargo_run_in() {
       echo ":: Trying to run cargo in $1"
       [[ -d "$1" ]] &&
@@ -67,26 +62,22 @@ script:
           echo -e "--- Done with test scripts ---\n\n"
       } || true
   done
-
 addons:
   apt:
     packages:
     - libcurl4-openssl-dev
     - libelf-dev
     - libdw-dev
-
 after_success:
-    - travis-cargo --only stable doc-upload
-
+- travis-cargo --only stable doc-upload
 notifications:
   email:
     on_success: never
   irc:
     channels:
-            - "chat.freenode.net#imag"
+    - chat.freenode.net#imag
     template:
     - "%{repository_name} (%{branch} @ %{commit} by %{author}): %{result}"
-
 env:
     global:
         - TRAVIS_CARGO_NIGHTLY_FEATURE=dev