2 Commits (3544c60c718fa002b4a79d2b49359548d2d2b0b4)

Author	SHA1	Message	Date
Heng Li	3544c60c71	allow to test if index is present	2017-09-16 20:09:17 -04:00
Heng Li	10bd4079d1	fixed a bug on rev strand; added example	2017-09-16 17:51:13 -04:00