added Pebble Guidelines to Key Characteristics
added Pebble Guidelines to Key Characteristics

dondi/paradixm,bdavs3/paradixm,obrienthomas13/paradixm,eileenchoe/paradixm,bdavs3/paradixm,PokeADotProductions/paradixm,eileenchoe/paradixm,dondi/paradixm,ronyaguilar09/paradixm,jtorre39/paradixm,obrienthomas13/paradixm,ronyaguilar09/paradixm,jtorre39/paradixm,PokeADotProductions/paradixm