message: update install.md with ldconfig fix
diff: - tar --bzip2 -xf boost_1_60_0.tar.bz2
  - ./bootstrap.sh
  - ./b2
  -- sudo ldconfig ~/boost_1_60_0/stage/lib/
  +- sudo ldconfig ~/boost_1_60_0/stage/lib/ ~/libscapi/install/lib/
  #### Installing OpenSSL
  - sudo apt-get install libssl-ocaml-dev libssl-dev
  