add material of session 1

.gitignore

assets/assets/slides/fossgis_01_slides/LICENSE

assets/assets/slides/fossgis_01_slides/dist/reset.css

assets/assets/slides/fossgis_01_slides/dist/reveal.css

assets/assets/slides/fossgis_01_slides/dist/reveal.esm.js

assets/assets/slides/fossgis_01_slides/dist/reveal.js

assets/assets/slides/fossgis_01_slides/dist/theme/beige.css

assets/assets/slides/fossgis_01_slides/dist/theme/black.css

assets/assets/slides/fossgis_01_slides/dist/theme/blood.css

.../fossgis_01_slides/dist/theme/fonts/league-gothic/LICENSE

...1_slides/dist/theme/fonts/league-gothic/league-gothic.css

...1_slides/dist/theme/fonts/league-gothic/league-gothic.eot

...1_slides/dist/theme/fonts/league-gothic/league-gothic.ttf

..._slides/dist/theme/fonts/league-gothic/league-gothic.woff

...ossgis_01_slides/dist/theme/fonts/source-sans-pro/LICENSE

...st/theme/fonts/source-sans-pro/source-sans-pro-italic.eot

...st/theme/fonts/source-sans-pro/source-sans-pro-italic.ttf

...t/theme/fonts/source-sans-pro/source-sans-pro-italic.woff

...t/theme/fonts/source-sans-pro/source-sans-pro-regular.eot

...t/theme/fonts/source-sans-pro/source-sans-pro-regular.ttf