Stop using Travis CI.

.travis.yml

@@ -1,21 +0,0 @@
-language: common-lisp
-sudo: required
-
-env:
-  global:
-    - PATH=~/.roswell/bin:$PATH
-  matrix:
-    - LISP=sbcl
-    - LISP=ccl
-
-install:
-  # Install Roswell
-  - curl -L https://raw.githubusercontent.com/snmsts/roswell/master/scripts/install-for-ci.sh | sh
-
-before_script:
-  - git clone https://github.com/fukamachi/clack ~/lisp/clack
-  - git clone https://github.com/fukamachi/prove ~/lisp/prove
-  - ros -l ~/lisp/prove/prove.asd install prove
-
-script:
-  - run-prove t-*.asd

README.md

@@ -1,8 +1,7 @@
 # Lack, the core of Clack
 
-[![Build Status](https://travis-ci.org/fukamachi/lack.svg?branch=master)](https://travis-ci.org/fukamachi/lack)
+[![Build Status](https://circleci.com/gh/fukamachi/lack.svg?style=shield)](https://circleci.com/gh/fukamachi/lack)
 [![Coverage Status](https://coveralls.io/repos/fukamachi/lack/badge.svg?branch=master)](https://coveralls.io/r/fukamachi/lack)
-[![Circle CI](https://circleci.com/gh/fukamachi/lack.svg?style=svg)](https://circleci.com/gh/fukamachi/lack)
 
 Lack is a Common Lisp library which allows web applications to be constructed of modular components. It was originally a part of [Clack](https://github.com/fukamachi/clack), however it's going to be rewritten as an individual project since Clack v2 with performance and simplicity in mind.