added EA_Urcotte.script file
MAde Ethans corrections to Turcotte et al data file
Moved EA_Turcotte.script in scripts dir
Ethan explained that git add . is not a great way to do things. Need to specify files.
correct spelling of herbovory
Merge pull request #225 from Wolflab/pauls_new_data_set

added EA_Urcotte.script file