Add more Pokémon information (Closes #35)

Includes:
-Species Name
-Height and Weight
-Capture Rate
-Base Egg Steps to Hatch
-Gender Ratio
-Base Happiness
-Egg Group
-Dex Entries
-EVs the Pokemon gives after battle

All data based on [Veekun Pokedex](https://github.com/veekun/pokedex)
Also added Veekuns identifier for later use.