Added metatag description and keywords for contribute docs
Added metatag description and keywords for contribute docs

cobrateam/splinter,bubenkoff/splinter,myself659/splinter,nikolas/splinter,objarni/splinter,gjvis/splinter,drptbl/splinter,objarni/splinter,underdogio/splinter,objarni/splinter,cobrateam/splinter,gjvis/splinter,nikolas/splinter,myself659/splinter,drptbl/splinter,bmcculley/splinter,nikolas/splinter,underdogio/splinter,bubenkoff/splinter,bmcculley/splinter,underdogio/splinter,lrowe/splinter,myself659/splinter,lrowe/splinter,bmcculley/splinter,lrowe/splinter,cobrateam/splinter,drptbl/splinter,gjvis/splinter