Update README

README.md

@@ -1,14 +1,37 @@
 # GSoC 2017 - Jingle File Transfer Demo App
 ## File synchronisation via XMPP.
 
-xmpp_sync has two modes: Master and Slave mode. A client started in master mode will send files 
-out, while clients in slave mode will receive files.
+This application demonstratest the possibilities of Jingle File Transfer via XMPP. xmpp_sync can be used to mirror the contents of one directory across several computers.
 
-In order to use the program, you need at least two XMPP accounts (which might be on different 
-servers). I recommend using a server, which supports Socks5 proxies.
+### Building
+
+Since some of the code I wrote for Smack is not yet merged, you'll have to build it yourselves.
+
+```
+git clone git@github.com:vanitasvitae/Smack.git
+cd Smack
+git checkout jingle3
+gradle install
+```
+
+Next clone the repository of xmpp_sync.
+```
+cd ..
+git clone git@github.com:vanitasvitae/xmpp_sync.git
+cd xmpp_sync
+gradle build
+```
+
+The resulting executable jar file can be found in `build/libs` afterwards.
 
 ### Available options and commands:
 
+xmpp_sync has two modes: Master and Slave mode. A client started in master mode will send files
+out, while clients in slave mode will receive files.
+
+In order to use the program, you need at least two XMPP accounts (which might be on different
+servers). I recommend using a server, which supports Socks5 proxies.
+
 The application has the following options available when being started.
 ```
 usage: client [-d] -D <arg> [-h] [-m] -p <swordfish> -u <user@server.tld>

src/main/java/de/vanitasvitae/sync_client/Slave.java

@@ -49,7 +49,7 @@ public class Slave extends Client {
                         }
                     }
                 }
-                
+
                 target.getParentFile().mkdirs();
                 offer.accept(connection, target);
             } catch (InterruptedException | XMPPException.XMPPErrorException | SmackException.NoResponseException | SmackException.NotConnectedException | IOException e) {