Merge pull request #349 from timgates42/bugfix/typo_unsigned

Fix simple typo: unisgned -> unsigned

Author: josephmancuso

orator/schema/blueprint.py

@@ -442,7 +442,7 @@ def small_integer(self, column, auto_increment=False, unsigned=False):
 
     def unsigned_integer(self, column, auto_increment=False):
         """
-        Create a new unisgned integer column on the table.
+        Create a new unsigned integer column on the table.
 
         :param column: The column
         :type column: str