Add travis CI config

.travis.yml

Index: .travis.yml
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000000000000000000000000000000000000..9ce4683944b26edaa0280b363b0e87392b692999
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,26 @@
+# Travis build integration.
+# https://docs.travis-ci.com/
+language: cpp
+# TODO: add a clang build as well.
+compiler:
+ - gcc
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - gcc-4.8
+      - g++-4.8
+# Travis sets CC/CXX to the system toolchain based on the `compiler`
+# selection. If clang is added, this should move to be set inside the
+# matrix.
+env:
+  - USE_CC=gcc-4.8 USE_CXX=g++-4.8
+before_install: ./scripts/travis-checkout.sh
+script: ./scripts/travis-build.sh
+os:
+  - linux
+# TODO: add mac support, needs coordination from Travis.

[vapier, 2016/04/11 17:13:35]

why does it need coordination w/Travis ?  i've set up builds before w/OS X and
didn't need to talk to anyone.

[Ted Mielczarek, 2016/04/11 17:30:16]

Oh, I just have outdated information. For the longest time this was in beta and
you had to explicitly ask them to enable it for you. I'll fix that comment.

[Ted Mielczarek, 2016/04/12 10:03:05]

Done.

+notifications:
+  email:
+    - google-breakpad-dev@googlegroups.com