Add .gitignore file

Apparently, there is no .gitignore file in the upstream repo.

[endlessm/eos-shell#3677]
New Endless logo to satisfy trademark requirements

[endlessm/eos-shell#3677]
Clean up software version reporting

Remove GNOME version reporting.

Move Endless version into the list of specifications,
since it does not look right directly under the new logo.

For consistency, we now call the OS "Endless" rather than "EndlessOS".

[endlessm/eos-shell#3677]
Spanish and Portuguese translations of "Version"

[endlessm/eos-shell#3677]
Merge pull request #17 from endlessm/shell/3677

Shell/3677