change lint settings and fix warnings

pom.xml

@@ -105,6 +105,11 @@
         <configuration>
           <source>1.7</source>
           <target>1.7</target>
+          <compilerArgs>
+            <arg>-Xlint:unchecked</arg>
+          </compilerArgs>
+          <showWarnings>true</showWarnings>
+          <showDeprecation>true</showDeprecation>
         </configuration>
       </plugin>
       <plugin>

src/main/java/io/socket/parser/Binary.java

@@ -15,6 +15,7 @@ public class Binary {
     private static final String KEY_NUM = "num";
 
 
+    @SuppressWarnings("unchecked")
     public static DeconstructedPacket deconstructPacket(Packet packet) {
         List<byte[]> buffers = new ArrayList<byte[]>();
 
@@ -69,6 +70,7 @@ public class Binary {
         return data;
     }
 
+    @SuppressWarnings("unchecked")
     public static Packet reconstructPacket(Packet packet, byte[][] buffers) {
         packet.data = _reconstructPacket(packet.data, buffers);
         packet.attachments = -1;

src/main/java/io/socket/parser/Parser.java

@@ -170,7 +170,7 @@ public class Parser {
         }
 
         private static Packet decodeString(String str) {
-            Packet p = new Packet();
+            Packet<Object> p = new Packet<Object>();
             int i = 0;
             int length = str.length();
 

src/test/java/io/socket/parser/Helpers.java

@@ -46,6 +46,7 @@ public class Helpers {
         decoder.add(errorMessage);
     }
 
+    @SuppressWarnings("unchecked")
     public static void testBin(final Packet obj) {
         final Object originalData = obj.data;
         encoder.encode(obj, new Parser.Encoder.Callback() {