Add new articles

docs/platforms/espressif_extra.rst

@@ -240,6 +240,7 @@ Using Arduino Framework with Staging version
 Articles
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+* Sep 2, 2016 - **Tinkerman** `Optimizing files for SPIFFS with Gulp <http://tinkerman.cat/optimizing-files-for-spiffs-with-gulp/>`_
 * Jul 15, 2016 - **Jaime** - `ESP8266 Mobile Rick Roll Captive Portal <https://hackaday.io/project/12709-esp8266-mobile-rick-roll-captive-portal>`_
 * Jun 13, 2016 - **Daniel Eichhorn** - `New Weather Station Demo on Github <http://blog.squix.org/2016/06/new-weather-station-demo-on-github.html>`_
 * Jun 3, 2016 - **Daniel Eichhorn** - `ESP8266: Continuous Delivery Pipeline – Push To Production <http://blog.squix.org/2016/06/esp8266-continuous-delivery-pipeline-push-to-production.html>`_

docs/platforms/nordicnrf51_extra.rst

@@ -9,6 +9,11 @@
     See the License for the specific language governing permissions and
     limitations under the License.
 
+Articles
+--------
+
+* Aug 28, 2016 - **Tom Parker ** `Using the BBC micro:bit with PlatformIO <http://www.lshift.net/blog/2016/08/28/using-the-bbc-microbit-with-platformio/>`_
+
 Examples
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