Update redis docs

docs/REDIS.md

@@ -2,6 +2,25 @@
 
 I introduced Redis support for store information about attacks.
 
+How to compile:
+
+Install dependencies:
+```bash
+# Debian like distros
+apt-get install -y libhiredis-dev
+# RedHat like distros 
+yum install -y hiredis-devel
+```
+
+Uncomment lines regarding redis in CMakeLists.txt
+
+And compile:
+```bash
+cd /usr/src/fastnetmon/src/build
+cmake ..
+make
+```
+
 Please call ```redis-cli``` and input following commands
 
 ```bash