Add text classification with Fluid.
Created by: peterzhang2029
num_pass: 30 batch_size: 4 use_gpu: False
Time cost:
CPU: Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz Train time: 7252.858182s commit id: fb1a0dfb157032f3eb7cdabcb445a77656ef2498
CPU: Intel(R) Core(TM) i5-5257U CPU @ 2.70GHz Train time: 5022.535137s commit id: 4fb3c676a8f229684f0369d5e2e0d549c97565a8