Handle new args order for cli pegjs 0.10
Handle new args order for cli pegjs 0.10

Latest release for pegjs 0.10.0 on 2016/08/19 now requires the
output file be identified by using the `-o` option.  As mentioned
in #12 the `npm install` would fail building `parser.js`.

This change updates the `package.json` `prepublish` command to use
`-o`.  The required version for pegjs is updated to ">=0.10".

Resolves #12

hughsk/svg-path-parser