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