Register slitherin-gym environment

[kimbring2]

I think it would be nice to register your custom environment and
use it like below code for portability.

import gym
import slitherinenv

env = gym.make('SlitherinEnv-v0')
env.__init__(num_agents=1)
env.reset()

for i_episode in range(20):
    observation = env.reset()
    for t in range(100):
        env.render()
        #print(observation)
        action = env.action_space.sample()
        observation, reward, done, info = env.step(action)
        if done:
            print("Episode finished after {} timesteps".format(t+1))
            break

[bhairavmehta95]

Great idea, this is coming in the next iteration. Thank you for bringing this up!