remove history.rdoc (fix #66)
remove history.rdoc (fix #66)

ducthanh/timecop,travisjeffery/timecop,grosser/timecop,backupify/timecop,rednovalabs/timecop,grosser/timecop,backupify/timecop,kidaa/timecop,ducthanh/timecop,7091lapS/timecop,rednovalabs/timecop,7091lapS/timecop