Fix conda recipe

Fixes #260
8 jobs for master in 158 minutes and 6 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #187812
docker
build_linux_36

01:28:13

63.0%
passed #187811
docker
build_linux_37

01:29:49

63.0%
passed #187676
macosx
build_macosx_36

01:07:07

63.0%
passed #187677
macosx
build_macosx_37

01:06:56

63.0%
canceled #187708
docker
build_linux_36

00:32:19

failed #187678
docker
build_linux_36

01:29:15

63.0%
failed #187679
docker
build_linux_37

01:28:59

63.0%
 
  Deploy
passed #187680
docker
deploy_beta

00:01:09