added ../src to path for tests

Author: dmalan

tests/python2.py

@@ -1,3 +1,7 @@
+import sys
+
+sys.path.insert(0, "../src")
+
 import cs50
 
 l = cs50.get_long()

tests/python3.py

@@ -1,3 +1,7 @@
+import sys
+
+sys.path.insert(0, "../src")
+
 import cs50
 
 i = cs50.get_int()

tests/sqltests.py

@@ -3,6 +3,8 @@
 import unittest
 import warnings
 
+sys.path.insert(0, "../src")
+
 from cs50.sql import SQL
 
 class SQLTests(unittest.TestCase):