clap 0.4.17

A simple and efficient Command Line Argument Parser
# v0.4.17
    * Arg values now accept lifetimes other than 'static
# v0.4.16
    * Fixed bug with multiple options
    * Removed unneeded Box<>'s
    * Fixed formatting with positionals in help info
# v0.4.15
    * Changed libc to crates.io in prep for Rust 1.0 stability
# v0.4.14
    * Changed App version, about, name, author, and usage to allow lifetimes other than 'static
# v0.4.13
    * Bug fixes with how multiple options are parsed
# v0.4.12
    * Minor bug fixes
# v0.4.11
    * Bug fixes and cleaned up code organization (well started to...)
    * Changed runtime representation of arguments to lower allocated memory
# v0.4.10
    * Minor bug fixes
    * Added more comprehensive examples to repo