Fix setup script.

Author: 1e0ng

setup.py

@@ -5,12 +5,12 @@
 setup(
     name = 'segmenttree',
     version = '1.0.0',
-    keywords = ('segment', 'tree'),
+    keywords = 'segment tree',
     description = 'A Python implementation of Segment Tree',
     license = 'MIT License',
 
     url = 'https://leons.im/posts/a-python-implementation-of-segment-tree/',
-    author = 'Leon S',
+    author = '1e0n',
     author_email = 'i@leons.im',
 
     packages = find_packages(),