fixed old URLs in readme.md (#425)

* fixed old URLs in readme.md

* changed to https

forgot first and i couldn't help my ocd, sorry

README.md

@@ -6,9 +6,9 @@ An [Arduino](https://arduino.cc/) library for sending and receiving data using [
 
 ## Compatible Hardware
 
- * [Semtech SX1276/77/78/79](http://www.semtech.com/apps/product.php?pn=SX1276) based boards including:
-   * [Dragino Lora Shield](http://www.dragino.com/products/module/item/102-lora-shield.html)
-   * [HopeRF](http://www.hoperf.com/rf_transceiver/lora/) [RFM95W](http://www.hoperf.com/rf_transceiver/lora/RFM95W.html), [RFM96W](http://www.hoperf.com/rf_transceiver/lora/RFM96W.html), and [RFM98W](http://www.hoperf.com/rf_transceiver/lora/RFM98W.html)
+ * [Semtech SX1276/77/78/79](https://www.semtech.com/apps/product.php?pn=SX1276) based boards including:
+   * [Dragino Lora Shield](https://www.dragino.com/products/lora/item/102-lora-shield.html)
+   * [HopeRF](https://www.hoperf.com/modules/lora/index.html) [RFM95W](https://www.hoperf.com/modules/lora/RFM95.html), [RFM96W](https://www.hoperf.com/modules/lora/RFM96.html), and [RFM98W](https://www.hoperf.com/modules/lora/RFM98.html)
    * [Modtronix](http://modtronix.com/) [inAir4](http://modtronix.com/inair4.html), [inAir9](http://modtronix.com/inair9.html), and [inAir9B](http://modtronix.com/inair9b.html)
  * [Arduino MKR WAN 1300](https://store.arduino.cc/usa/mkr-wan-1300)
    * **NOTE:** Requires firmware v1.1.6 or later on the on-board Murata module. Please use the [MKRWANFWUpdate_standalone example](https://github.com/arduino-libraries/MKRWAN/blob/master/examples/MKRWANFWUpdate_standalone/MKRWANFWUpdate_standalone.ino) from latest [MKRWAN library](https://github.com/arduino-libraries/MKRWAN) release to update the firmware.