Add .travis.yml for Travis CI

@bunnei or @neobrain, you'll have to add this to Travis.

.travis.yml

@@ -0,0 +1,20 @@
+os:
+  - linux
+  - osx
+
+language: cpp
+
+before_install:
+  - wget http://sourceforge.net/projects/devkitpro/files/Automated%20Installer/devkitARMupdate.pl
+  - export DEVKITPRO=/home/travis/devkitPro
+  - export DEVKITARM=${DEVKITPRO}/devkitARM
+  - git clone https://github.com/smealum/ctrulib
+
+install:
+  - sudo perl devkitARMupdate.pl
+  - cd ctrulib/libctru
+  - make
+  - sudo make install
+
+script:
+  - make