Add github links to submit issues directly

[armellarcier]

Example

Many films have no people associated.

Adding a link to https://github.com/janaipakos/ghibliapi/issues/new?title=More Castle in the Sky characters&body= on the bottom of the page would be nice!

body could look like this, but url encoded :

# I know characters from that movie

Here is the list :

- [ ] ...