Update documentation

Mention `NOPAGER` which disables Pager.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 4aedc29..868657c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -34,6 +34,9 @@
 //! running as usual. `Pager` cleans after itself and doesn't leak resources in
 //! case of setup failure.
 //!
+//! If you need to disable pager altogether set environment variable `NOPAGER` and Pager::setup()
+//! will skip initialization. The host application will continue as normal. Pager::ok() will
+//! reflect the fact that no Pager is active.
 
 extern crate libc;