add support for Bit2c exchange

git-svn-id: https://openclerk.googlecode.com/svn/trunk@961 b12a1112-ca08-e5dd-f792-535eff3abf3b
Correcting pull request according to code review of pull request.

git-svn-id: https://openclerk.googlecode.com/svn/trunk@962 b12a1112-ca08-e5dd-f792-535eff3abf3b
Bit2c exchange no longer unsafe.

git-svn-id: https://openclerk.googlecode.com/svn/trunk@964 b12a1112-ca08-e5dd-f792-535eff3abf3b
issue #89: cleaning up instructions for bit2c accounts

git-svn-id: https://openclerk.googlecode.com/svn/trunk@965 b12a1112-ca08-e5dd-f792-535eff3abf3b
issue #89: cleaning up bit2c pull request

git-svn-id: https://openclerk.googlecode.com/svn/trunk@966 b12a1112-ca08-e5dd-f792-535eff3abf3b