Add continuous integration (#130)

.travis.yml

@@ -0,0 +1,19 @@
+dist: bionic
+group: travis_latest
+
+os: linux
+language: python
+
+before_install: 
+  - sudo apt-get install -qq libsdl2-dev libagg-dev libfreetype6
+  
+matrix:
+  include:
+    - env: CC=gcc
+
+install:
+  - pip install meson ninja
+
+script:
+  - meson setup build
+  - meson compile -C build

README.md

@@ -1,3 +1,4 @@
+![travis](https://api.travis-ci.com/netrobert/lite-xl.svg?branch=master)
 # Lite XL
 
 ![screenshot-dark](https://user-images.githubusercontent.com/433545/111063905-66943980-84b1-11eb-9040-3876f1133b20.png)