add readme

README.md

+# FingerDTA
+
+### （1）generate fingerprint
+
+generate_fingerprint.py
+
+**input:** 
+
++ smiles sequence : seq.npy
+
+**output:**
+
++ KIBA_fingerprint.npy
+
+### （2）train and evaluate
+
+train_and_evaluate.py
+
+**input:** 
+
++  KIBA_ligand.pickle
++  KIBA_protein.pickle
++  KIBA_relation.pickle
++ test_fold_setting1.txt  +  train_fold_setting1.txt
+
+**output:**
+
++ MSE
+
+
+
+Data can be download from http://172.16.131.24:5000/biod/zhangjian
+