Show binary path in the error message

lib/extensions.js

@@ -143,7 +143,7 @@ sass.getBinaryPath = function(throwIfNotExists) {
   }
 
   if (!fs.existsSync(binaryPath) && throwIfNotExists) {
-    throw new Error('`libsass` bindings not found. Try reinstalling `node-sass`?');
+    throw new Error(['`libsass` bindings not found in ', binaryPath, '. Try reinstalling `node-sass`?'].join(''));
   }
 
   return binaryPath;

test/api.js

@@ -1490,7 +1490,7 @@ describe('api', function() {
       assert.throws(function() {
         fs.renameSync(originalBin, renamedBin);
         process.sass.getBinaryPath(true);
-      }, /`libsass` bindings not found. Try reinstalling `node-sass`?/);
+      }, /`libsass` bindings not found/);
 
       fs.renameSync(renamedBin, originalBin);
       done();