Wrap up conversion to NsdManager

[iheart2code]

I have completed discovery (see relevant commit 9fbc29f) and gotten everything working except for launching images and a thorough QA. Also, the AirPlay device seems to drop quite frequently, even when it is still on the network.

• fix image launching (see stack trace below)
• figure out why AirPlay keeps dropping from network

Here is the error I get when trying to launch images.

06-12 12:11:30.865: W/System.err(26305): java.net.UnknownHostException: Unable to resolve host "ec2-54-201-108-205.us-west-2.compute.amazonaws.com": No address associated with hostname
06-12 12:11:30.865: W/System.err(26305):    at java.net.InetAddress.lookupHostByName(InetAddress.java:424)
06-12 12:11:30.865: W/System.err(26305):    at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
06-12 12:11:30.865: W/System.err(26305):    at java.net.InetAddress.getAllByName(InetAddress.java:214)
06-12 12:11:30.865: W/System.err(26305):    at com.android.okhttp.internal.Dns$1.getAllByName(Dns.java:28)
06-12 12:11:30.865: W/System.err(26305):    at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:216)
06-12 12:11:30.865: W/System.err(26305):    at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:122)
06-12 12:11:30.865: W/System.err(26305):    at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:292)
06-12 12:11:30.865: W/System.err(26305):    at com.android.okhttp.internal.http.HttpEngine.sendSocketRequest(HttpEngine.java:255)
06-12 12:11:30.865: W/System.err(26305):    at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:206)
06-12 12:11:30.865: W/System.err(26305):    at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:345)
06-12 12:11:30.865: W/System.err(26305):    at com.android.okhttp.internal.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:89)
06-12 12:11:30.865: W/System.err(26305):    at com.connectsdk.service.AirPlayService$5.run(AirPlayService.java:332)
06-12 12:11:30.865: W/System.err(26305):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
06-12 12:11:30.865: W/System.err(26305):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
06-12 12:11:30.865: W/System.err(26305):    at java.lang.Thread.run(Thread.java:841)
06-12 12:11:30.865: W/System.err(26305): Caused by: libcore.io.GaiException: getaddrinfo failed: EAI_NODATA (No address associated with hostname)
06-12 12:11:30.865: W/System.err(26305):    at libcore.io.Posix.getaddrinfo(Native Method)
06-12 12:11:30.865: W/System.err(26305):    at libcore.io.ForwardingOs.getaddrinfo(ForwardingOs.java:61)
06-12 12:11:30.865: W/System.err(26305):    at java.net.InetAddress.lookupHostByName(InetAddress.java:405)
06-12 12:11:30.875: W/System.err(26305):    ... 14 more

[khk624]

Those two issues are not reproducible here.
The first issue, I think the server had some issue at the moment, so that it couldn't be reachable.

[iheart2code]

Let's hold on this in favor of #107