add travis

.travis.yml

@@ -0,0 +1,25 @@
+# adapted from
+# https://github.com/greghendershott/travis-racket/blob/master/.travis.yml
+# Thanks Greg!
+
+language: c
+sudo: false
+
+env:
+  global:
+    - RACKET_DIR=~/racket
+  matrix:
+    - RACKET_VERSION=6.1.1
+
+matrix:
+  fast_finish: true
+
+before_install:
+  - git clone https://github.com/greghendershott/travis-racket.git
+  - cat travis-racket/install-racket.sh | bash # pipe to bash not sh!
+  - export PATH="${RACKET_DIR}/bin:${PATH}" #install-racket.sh can't set for us
+
+script:
+ - cd ..   # Travis did a cd into the dir. Back up, for the next:
+ - raco pkg install --deps search-auto --link pollen
+ - raco test -p pollen

README.md

@@ -1,4 +1,4 @@
-## Pollen: the book is a program
+## Pollen: the book is a program [![Build Status](https://travis-ci.org/mbutterick/pollen.svg)](https://travis-ci.org/mbutterick/pollen)
 
 A book-publishing system written in [Racket](http://racket-lang.org). Unstable. Incomplete. Et cetera. It’s becoming more civilized. But this is the actual software I use to publish & maintain my web-based book [Butterick’s Practical Typography](http://practicaltypography.com).