Merge pull request #7 from nagisa/readme

Make version bound less strict
diff --git a/Cargo.toml b/Cargo.toml
index 6821c7f..0803647 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,6 +11,7 @@
 description = """
 Random number generators and other randomness functionality.
 """
+keywords = ["random"]
 
 [dependencies]
 log = "0.2.1"