Merge pull request #1657 from fser/patch-1

Update INSTALL.md

INSTALL.md

@@ -193,7 +193,7 @@ apt-get -t jessie-backports install linux-base linux-image-4.9.0-0.bpo.2-amd64 l
 apt-get install debhelper cmake libllvm3.8 llvm-3.8-dev libclang-3.8-dev \
   libelf-dev bison flex libedit-dev clang-format-3.8 python python-netaddr \
   python-pyroute2 luajit libluajit-5.1-dev arping iperf netperf ethtool \
-  devscripts zlib1g-dev
+  devscripts zlib1g-dev libfl-dev
 ```
 
 #### Sudo