diff --git a/.gitignore b/.gitignore
index 1927887..9e33ae8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 *.pyc
 __pycache__
 dist
+*.egg-info/
diff --git a/README.md b/README.md
index fab0210..065975e 100644
--- a/README.md
+++ b/README.md
@@ -9,3 +9,31 @@ The implementation is based on the [Ruby code](https://github.com/goshrine/whole
 ## Installation
 
     pip install whr
+
+# Usage
+
+    In [1]: import whr
+    ...:
+    ...: base = whr.Base(config={'w2': 30})
+    ...: base.create_game('Alice', 'Carol', 'D', 0) # Alice and Carol had a draw on Day 0
+    ...: base.create_game('Bob', 'Dave', 'B', 10)   # Bob won Dave on Day 10
+    ...: base.create_game('Dave', 'Alice', 'W', 30) # Dave lost to Alice on Day 30
+    ...: base.create_game('Bob', 'Carol', 'W', 60)  # Bob lost to Carol on Day 60
+    ...:
+    ...: base.iterate(50)                           # iterate for 50 rounds
+
+    In [2]: print(base.ratings_for_player('Alice'))
+    ...: print(base.ratings_for_player('Bob'))
+    ...: print(base.ratings_for_player('Carol'))
+    ...: print(base.ratings_for_player('Dave'))
+    [[0, 78.50976252870765, 114.0890917675107], [30, 79.47183295485291, 116.02912272478814]]
+    [[10, -15.262552175731381, 108.50075126605397], [60, -18.08603087778281, 111.07152016073245]]
+    [[0, 103.9187774903099, 108.03027219107216], [60, 107.30695193277161, 111.12369929419124]]
+    [[10, -176.6773935927304, 134.07989121465133], [30, -177.31877387682724, 135.25422816732765]]
+
+    In [3]: print(base.get_ordered_ratings())
+    [('Carol', [[0, 103.9187774903099, 108.03027219107216], [60, 107.30695193277161, 111.12369929419124]]), ('Alice', [[0, 78.50976252870765, 114.0890917675107], [30, 79.47183295485291, 116.02912272478814]]), ('Bob', [[10, -15.262552175731381, 108.50075126605397], [60, -18.08603087778281, 111.07152016073245]]), ('Dave', [[10, -176.6773935927304, 134.07989121465133], [30, -177.31877387682724, 135.25422816732765]])]
+
+# References
+
+Rémi Coulom. Whole-history rating: A Bayesian rating system for players of time-varying strength. In _International Conference on Computers and Games_. 2008. <https://www.remi-coulom.fr/WHR/WHR.pdf>
diff --git a/setup.py b/setup.py
index b2e45e0..4c99dc8 100644
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@
 setup(
     name='whr',
     packages=['whr'],
-    version='1.0.0',
+    version='1.0.1',
     license='MIT',
     description=
     'A Python implementation of the Whole History Rating algorithm proposed by Rémi Coulom. '
@@ -19,21 +19,13 @@
     author_email='haotianyi0@126.com',
     url='https://github.com/wind23/whole_history_rating',
     download_url=
-    'https://github.com/wind23/whole_history_rating/archive/1.0.0.tar.gz',
+    'https://github.com/wind23/whole_history_rating/archive/1.0.1.tar.gz',
     keywords=['WHR', 'whole history rating', 'Elo rating'],
     install_requires=[],
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Intended Audience :: Developers',
-        'Topic :: Software Development :: Build Tools',
         'License :: OSI Approved :: MIT License',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
-        'Programming Language :: Python :: 3.9',
-        'Programming Language :: Python :: 3.10',
     ],
 )
\ No newline at end of file