add travis tests

.travis.yml

@@ -0,0 +1,12 @@
+language: c
+
+install:
+  - sudo dpkg --add-architecture i386
+  - sudo apt-get update
+  - sudo apt-get install libsdl2-dev:i386
+
+before_script:
+  - make build_unix
+
+script:
+  - cd src/tests && bash ./runtests.sh

README.md

@@ -1,5 +1,7 @@
 ![TREZOR Core](docs/logo.png)
 
+[![Build Status](https://travis-ci.org/trezor/trezor-core.svg?branch=master)](https://travis-ci.org/trezor/trezor-core) [![gitter](https://badges.gitter.im/trezor/community.svg)](https://gitter.im/trezor/community)
+
 * [Documentation](docs/)
 
 ##Build instructions for emulator

src/tests/run_tests.sh

@@ -1,13 +1,16 @@
 #!/bin/bash
 results=()
+error=0
 for i in *.py; do
    echo
     if ../../vendor/micropython/unix/micropython $i; then
        results+=("OK   $i")
     else
        results+=("FAIL $i")
+       error=1
     fi
 done
 echo
 echo 'Summary:'
 printf '%s\n' "${results[@]}"
+exit $error