Default to 500 error

This is not production ready code.

middleware/sendJSON.js

@@ -25,7 +25,7 @@ function sendJSONResponse(req, res, next) {
   if( check.array( geocoding.errors ) && geocoding.errors.length ){
 
     // default status for errors is 400 Bad Request
-    statusCode = 400; // 400 Bad Request
+    statusCode = 500; // 400 Bad Request
 
     // iterate over all reported errors
     geocoding.errors.forEach( function( err ){

test/unit/middleware/sendJSON.js

@@ -70,7 +70,7 @@ module.exports.tests.default_error_status = function(test, common) {
 
     res.status = function( code ){
       return { json: function( body ){
-        t.equal( code, 400, '400 Bad Request' );
+        t.equal( code, 500, '400 Bad Request' );
         t.deepEqual( body, res.body, 'body set' );
         t.end();
       }};
@@ -124,7 +124,7 @@ module.exports.tests.request_timeout = function(test, common) {
 
     res.status = function( code ){
       return { json: function( body ){
-        t.equal( code, 408, 'Request Timeout' );
+        t.equal( code, 500, 'Request Timeout' );
         t.deepEqual( body, res.body, 'body set' );
         t.end();
       }};
@@ -214,7 +214,7 @@ module.exports.tests.unknown_exception = function(test, common) {
 
     res.status = function( code ){
       return { json: function( body ){
-        t.equal( code, 400, '400 Bad Request' );
+        t.equal( code, 500, '400 Bad Request' );
         t.deepEqual( body, res.body, 'body set' );
         t.end();
       }};