Fix for #4 : swap git for https protocol in submodules initialisation

[kyzh]

Change git to https protocol, so people that can only access "the web" can clone it.

[Finkregh]

:-1: see my comment in #4

[ghost]

You can try this too: git config --global url."https://".insteadOf git:// (same comment in #4)

[kyzh]

Thanks, this is a perfect workaround provided in #4

[Dieterbe]

that workaround doesn't seem very healthy. it probably overrides push urls too? i looked into all options again, and "found git:// is the default so it should be used" not a very good argument. "https://" seems best for fetch/clone urls, so i just pushed a commit to fix this

[kyzh]

:sparkling_heart: