Added sync protocol concept

fl0w-protocol-concept.md

@@ -0,0 +1,47 @@
+# fl0w
+
+Client 1:
+<pre>
+.
+</pre>
+
+Client 2:
+<pre>
+.
+└── test.py (MD5: 7984fc60703f0e3801005e042bb13c86 | Timestamp: 1445794264)
+</pre>
+
+Server:
+<pre>
+.
+└── test.py (MD5: 354dc351e940ef48b689d4d925532053 | Timestamp: 1445794100)
+</pre>
+
+
+
+> Time = 0
+
+Client1: **Connect**  
+Client1: `{"auth" : {"user" : "test", "pw" : "123"}}`  
+Server > Client1: `{"auth" : 1}`  
+Client1: `{"sync" : []}`  
+Server > Client1: `{"sync" : ["test.py" : {"mtime" : 1445794100}]}`  
+Server > Client1: **test.py**
+
+> Time = 1
+
+Client2: **Connect**  
+Client2: `{"auth" : {"user" : "test1", "pw" : "1233"}}`  
+Server > Client2: `{"auth" : 0}`  
+Client2: **Disconnects**
+
+> Time = 2
+
+Client2: **Connect**  
+Client2: `{"auth" : {"user" : "test", "pw" : "123"}}`  
+Server > Client2: `{"auth" : 1}`  
+Client2: `{"sync" : ["test.py" : {"mtime" : 1445794264, "md5" : "7984fc60703f0e3801005e042bb13c86"}]}`
+Server > Client2: `{"sync" : ["test.py"]}`  
+Client2: **test.py**  
+Server > Client1: `{"sync" : ["test.py" : {"mtime" : 1445794264}]}`  
+Server > Client1: **test.py**