Minor doc fix - use only binary name

This is compatible with the installation guidelines, as the binary will
be in user's PATH

README.md

@@ -61,7 +61,7 @@ and by default it's expected to be stored in a file called `.gbackup.toml` in th
 working directory (but is configurable via the -c option). Then you would simply run:
 
 ```bash
- GMAIL_PASSWORD="mysecretpass" ./gbackup-rs -w 10
+ GMAIL_PASSWORD="mysecretpass" gbackup-rs -w 10
 ```
 
 This is recommended for the first back-up as it will pull down email using
@@ -79,7 +79,7 @@ Exporting the data to a widely used format such as [mbox](http://qmail.org./man/
 can be done by running with the `export` subcommand
 
 ```bash
-./gbackup-rs -c ~/.gbackup.toml export
+gbackup-rs -c ~/.gbackup.toml export
 ```
 
 This will in turn run any export engines configured for each account in the config,

src/main.rs

@@ -46,7 +46,7 @@
 //! working directory (but is configurable via the -c option). Then you would simply run:
 //!
 //! ```bash
-//!  GMAIL_PASSWORD="mysecretpass" ./gbackup-rs -w 10
+//!  GMAIL_PASSWORD="mysecretpass" gbackup-rs -w 10
 //! ```
 //!
 //! This is recommended for the first back-up as it will pull down email using
@@ -61,7 +61,7 @@
 //! can be done by running with the `export` subcommand
 //!
 //! ```bash
-//! ./gbackup-rs -c ~/.gbackup.toml export
+//! gbackup-rs -c ~/.gbackup.toml export
 //! ```
 //!
 //! This will in turn run any export engines configured for each account in the config,