Switch to Travis only CI

.travis.yml

@@ -15,3 +15,6 @@ script:
     - cargo test
     - cargo doc --no-deps
     - rustdoc --test README.md -L target/debug
+
+after_success:
+    - curl https://mvdnes.github.io/rust-docs/travis-doc-upload.sh | bash

shippable.yml

@@ -1,30 +0,0 @@
-language: python
-python:
-    - 2.7
-
-env:
-    - RUST_VERSION=stable
-
-notifications:
-    email:
-        recipients:
-            - ci@mathijs.vd-nes.nl
-        on_success: never
-        on_failure: always
-
-install:
-    - curl -o ~/rustup.sh https://static.rust-lang.org/rustup.sh
-    - sudo sh ~/rustup.sh --spec=$RUST_VERSION --disable-sudo -y 2> /dev/null
-
-before_script:
-    - rustc --version
-    - cargo --version
-
-script:
-    - cargo build
-    - cargo test
-    - cargo doc --no-deps
-    - rustdoc --test README.md -L target/debug
-
-after_success:
-    - curl https://mvdnes.github.io/rust-docs/shippable-doc-upload.sh | sh