changed texts and added button for selling
Merge pull request #28 from albanlv/gh-pages

changed texts and added button for selling
fix hotel7 links
Merge pull request #29 from etrepum/fix-hotel7-links

fix hotel7 links
Add 2 speakers
Add Code Climate as Bronze Sponsor
Merge pull request #30 from AdrienGiboire/master

New speakers and a sponsor
improv: JetBrains desc updated
Merge pull request #32 from zaiste/jetbrains-desc

improv: JetBrains desc updated