Add 'error-chain' to the main library

Use 'error-chain' here too. Seems like this will be a pretty useful
library.

Change the include in the 'meetup' `lib.rs` to allow us to export
`meetup::Error` instead of `meetup::errors::Error` to be consistent with
the error types of the other third-party libraries we're using.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index cc20fe5..6cfbd86 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,7 +1,10 @@
+#[macro_use]
+extern crate error_chain;
 extern crate rss;
 
 extern crate meetup;
 
 pub mod build_rss;
 
+mod errors;
 mod meetup_rss;