Add travis config

.travis.yml

@@ -0,0 +1,36 @@
+language: php
+
+php:
+  - 5.5
+  - 5.6
+  - 7.0
+
+sudo: false
+
+install:
+  - git clone https://github.com/krakjoe/pthreads.git;
+    pushd pthreads;
+    if [ "$TRAVIS_PHP_VERSION" != "7.0" ]; then
+        git checkout master;
+    else
+        git checkout seven;
+    fi;
+    phpize;
+    ./configure;
+    make;
+    make install;
+    popd;
+    echo "extension=pthreads.so" >> "$(php -r 'echo php_ini_loaded_file();')";
+  - composer self-update
+  - composer install --no-interaction --prefer-source
+
+script:
+  - if [ "$TRAVIS_PHP_VERSION" != "7.0" ]; then
+        vendor/bin/phpunit --coverage-text --coverage-clover build/logs/clover.xml
+    else
+        phpdbg -qrr vendor/bin/phpunit --coverage-text --coverage-clover build/logs/clover.xml
+    fi
+
+after_script:
+  - composer require satooshi/php-coveralls dev-master
+  - vendor/bin/coveralls -v --exclude-no-stmt;