Fix typo in index.js

Author: andy-ganchrow

index.js

@@ -205,7 +205,7 @@ function create_parser (self) {
             err.message += '. Please report this.';
             self.ready = false;
             self.flush_and_error({
-                message: 'Fatal error encountert. Command aborted.',
+                message: 'Fatal error encountered. Command aborted.',
                 code: 'NR_FATAL'
             }, {
                 error: err,
@@ -1106,4 +1106,4 @@ require('./lib/individualCommands');
 require('./lib/extendedApi');
 
 //enables adding new commands (for modules and new commands)
-exports.addCommand = exports.add_command = require('./lib/commands');
+exports.addCommand = exports.add_command = require('./lib/commands');