added interactive prompt bootstraping code

interp/bootstrap.py

@@ -0,0 +1,16 @@
+import atexit
+import os
+import readline
+import rlcompleter
+
+historyPath = os.path.expanduser("~/.pyhistory")
+
+def save_history(historyPath=historyPath):
+  import readline
+  readline.write_history_file(historyPath)
+
+if os.path.exists(historyPath):
+  readline.read_history_file(historyPath)
+
+atexit.register(save_history)
+del os, atexit, readline, rlcompleter, save_history, historyPath