Various fixes and improvements

• Use a automatic rule that fills the footer.
• Use the in-line logo for the footer, as in the PPT template.
• Cleaner README and example.
• Fix thanks footer spacing and hyphens.
• Fix section slide's rule length.

changed title from fix logo and footer's rule. to Various fixes and improvements

added 1 commit

• b0c0f195 - fix/feat: pass any option to beamer

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added 2 commits

• 5e560637 - use the 2020 vector logo instead of the bitmap one
• 6ebf862a - fix vertical spacing on the thanks slide

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added 1 commit

• 16a3ca00 - got bored, added a logo

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added 1 commit

• d7741e1b - got bored, added a logo

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added 2 commits

• 1194888e - minor typo fixed
• dc9590f1 - Merge branch 'master' into 'master'

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mentioned in commit 0197fc19

merged