travis: leave system OpenSSL unchanged on OSX build

now compiling using un-force-linked OpenSSL 1.0.1 from brew
we shouldn't be changing the system OpenSSL, as this can cause
other applications to stop working on OSX
opentxs-script: remove lines with comments containing dashed lines

Command used:
    sed -r -i '/^ *\/\/ ?-+$/d' src/opentxs-script/main.cpp
opentxs-script: remove lines with comments containing asterisk lines

Command used:
    sed -r -i '/^ *\/\/ ?\*+$/d'  main.cpp
Merge pull request #34 from toxeus/removeLines

style: remove comment separator lines
Merge pull request #8 from da2ce7/fix_includes_path

travis: do not force link openssl, use custom path in cmake