add travis

.travis.yml

@@ -0,0 +1,35 @@
+language: c
+env:
+  - OCAML_VERSION=4.01.0
+  - OCAML_VERSION=4.02.3
+  - OCAML_VERSION=4.04.2
+  - OCAML_VERSION=4.05.0
+  - OCAML_VERSION=4.05.0+flambda
+  - OCAML_VERSION=4.06.0
+addons:
+  apt:
+    sources:
+      - avsm
+    packages:
+      - opam
+# Caching may take a lot of space with so many ocaml versions
+#cache:
+#  directories:
+#    - $HOME/.opam
+before_install:
+  # Some opam boilerplate
+  - export OPAMYES=1
+  - export OPAMVERBOSE=1
+  - opam init
+  - opam switch ${OCAML_VERSION}
+  - eval `opam config env`
+install:
+  # Install dependencies
+  - opam pin add --no-action sequence .
+  - opam install oasis
+  - opam install --deps-only sequence
+script:
+  - make build
+  - opam install qcheck qtest
+  - ./configure --enable-tests
+  - make test

README.adoc

@@ -13,6 +13,8 @@ way of iterating on a finite number of values, only allocating (most of the time
 one intermediate closure to do so. For instance, iterating on keys, or values,
 of a `Hashtbl.t`, without creating a list.
 
+image::https://travis-ci.org/c-cube/sequence.svg?branch=master[alt="Build Status", link="https://travis-ci.org/c-cube/sequence"]
+
 toc::[]
 
 == Documentation