adding an exception classed TransportException which is thrown when there is an exception with the underlying transport (#81)

Author: robertroeser

Diff for: build.gradle

@@ -37,3 +37,8 @@ if (project.hasProperty('release.useLastTag')) {
 test {
     testLogging.showStandardStreams = true
 }
+
+compileJava {
+    sourceCompatibility = 1.8
+    targetCompatibility = 1.8
+}

Diff for: src/main/java/io/reactivesocket/DuplexConnection.java

@@ -15,18 +15,16 @@
  */
 package io.reactivesocket;
 
-import java.io.Closeable;
-
-import org.reactivestreams.Publisher;
-
 import io.reactivesocket.rx.Completable;
 import io.reactivesocket.rx.Observable;
+import org.reactivestreams.Publisher;
+
+import java.io.Closeable;
 
 /**
  * Represents a connection with input/output that the protocol uses. 
  */
 public interface DuplexConnection extends Closeable {
-    // TODO should we call this 'Connection'? 'SocketConnection'? 'ReactiveSocketConnection'?
 
 	Observable<Frame> getInput();
 

Diff for: src/main/java/io/reactivesocket/exceptions/TransportException.java

@@ -0,0 +1,28 @@
+/**
+ * Copyright 2015 Netflix, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.reactivesocket.exceptions;
+
+public class TransportException extends Throwable {
+    public TransportException(Throwable t) {
+        super(t);
+    }
+
+    @Override
+    public synchronized Throwable fillInStackTrace() {
+        return this;
+    }
+
+}