add changelog entry about ruby-grape#248

Author: NARKOZ

CHANGELOG.markdown

@@ -1,6 +1,7 @@
 Next Release
 ============
 
+* [#248](https://github.com/intridea/grape/pull/248): Fix: API version returns version. - [@narkoz](https://github.com/narkoz).
 * [#242](https://github.com/intridea/grape/issues/242): Fix: permanent redirect status. - [@adamgotterer](https://github.com/adamgotterer).
 * [#236](https://github.com/intridea/grape/pull/236): Allow validation of nested parameters. - [@tim-vandecasteele](https://github.com/tim-vandecasteele).
 * [#201](https://github.com/intridea/grape/pull/201): Added custom exceptions to Grape. Updated validations to use ValidationError that can be rescued. - [@adamgotterer](https://github.com/adamgotterer).