change repo structure; modify readme

examples/gymnax/cartpole.py

@@ -1,34 +0,0 @@
-import jax.numpy as jnp
-
-from pipeline import Pipeline
-from algorithm.neat import *
-
-from problem.rl_env import GymNaxEnv
-
-if __name__ == '__main__':
-    pipeline = Pipeline(
-        algorithm=NEAT(
-            species=DefaultSpecies(
-                genome=DefaultGenome(
-                    num_inputs=4,
-                    num_outputs=2,
-                    max_nodes=50,
-                    max_conns=100,
-                    output_transform=lambda out: jnp.argmax(out)  # the action of cartpole is {0, 1}
-                ),
-                pop_size=10000,
-                species_size=10,
-            ),
-        ),
-        problem=GymNaxEnv(
-            env_name='CartPole-v1',
-        ),
-        generation_limit=10000,
-        fitness_target=500
-    )
-
-    # initialize state
-    state = pipeline.setup()
-    # print(state)
-    # run until terminate
-    state, best = pipeline.auto_run(state)