message: Fix typo in README.md
  libssh -> libssl
diff: @@ -185,7 +185,7 @@ Building on Linux presumes that some essential programs are available, including
  - make
  - wget
  - libtool
  -- libssh headers & libraries
  +- libssl headers & libraries
  *wampcc* was developed on *xubuntu* and on this system these tools can be installed using the command:
  