Updated installation instructions.

Author: bungle

README.md

@@ -73,7 +73,7 @@ http {
 
 ## Installation
 
-Just place [`session.lua`](https://github.com/bungle/lua-resty-session/blob/master/lib/resty/session.lua) and [`session`](https://github.com/bungle/lua-resty-session/tree/master/lib/resty/session) directory somewhere in your `package.path`, preferably under `resty` directory. If you are using OpenResty, the default location would be `/usr/local/openresty/lualib/resty`.
+Just place [`session.lua`](https://github.com/bungle/lua-resty-session/blob/master/lib/resty/session.lua) and [`session`](https://github.com/bungle/lua-resty-session/tree/master/lib/resty/session) directory somewhere in your `package.path`, under `resty` directory. If you are using OpenResty, the default location would be `/usr/local/openresty/lualib/resty`.
 
 ### Using OpenResty Package Manager (opm)