API Environment Var name is wrong #24
Description
Several places in the documentation mention that CLOUDCONVERT_API_KEY is the name of the environment variable to set in order to use the default_client(). However, environment_vars.py sets the name of the variable to be just "API_KEY", which is directly used in the default_client(). My guess is that environment_vars.py is supposed to just have the default values if the variables aren't present, but somehow was mistaken to have the names of those variables.