Fix build instructions in README

README

@@ -60,11 +60,9 @@ Build dependencies: CMake, pkg-config, help2man, awk, sh, liberty (included)
 Runtime dependencies: openssl, curses (degesch),
                       readline or libedit >= 2013-07-12 (degesch)
 
- $ git clone https://github.com/pjanouch/uirc3.git
- $ git submodule init
- $ git submodule update
- $ mkdir build
- $ cd build
+ $ git clone --recursive https://github.com/pjanouch/uirc3.git
+ $ mkdir uirc3/build
+ $ cd uirc3/build
  $ cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Debug \
             -DWANT_READLINE=ON -DWANT_LIBEDIT=OFF
  $ make