Added build status

Author: judepereira

README.md

@@ -1,4 +1,7 @@
 # apns-http2
+
+[![Build Status](https://travis-ci.org/CleverTap/apns-http2.svg?branch=master)](https://travis-ci.org/CleverTap/apns-http2)
+
 A Java library for sending notifications via APNS using Apple's new HTTP/2 API.
 This library uses OkHttp.
 Previous versions included support for Jetty's client,
@@ -104,4 +107,4 @@ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-```
+```