Documentation update for SK-iM880B, SK-iM980A and SK-iM881A-XL platforms

Author: mluis1

Doc/SKiM88xx-platform.md

@@ -0,0 +1,6 @@
+# SKiM88xx platforms support documents
+
+The supported SKiM88xx platforms are:
+1. [SK-iM880B - Long Range Radio Starter Kit](https://wireless-solutions.de/products/starterkits/sk-im880b.html)
+2. [SK-iM980A - Long Range Radio Starter Kit](https://wireless-solutions.de/products/long-range-radio/im980a.html)
+3. [SK-iM881A-XL - Long Range Radio Starter Kit](https://wireless-solutions.de/products/long-range-radio/im881a-xl.html)

Doc/development-environment.md

@@ -114,6 +114,9 @@ Alternatively one can use a graphical interface to configure CMake, drop down me
      * NucleoL073 (default)
      * NucleoL152
      * SAML21
+     * SKiM880B
+     * SKiM980A
+     * SKiM881AXL
 * `REGION_EU868` - Enables support for the Region EU868 (Default ON)
 * `REGION_US915` - Enables support for the Region US915 (Default OFF)
 * `REGION_CN779` - Enables support for the Region CN779 (Default OFF)

readme.md

@@ -63,6 +63,9 @@ The [Porting Guide](http://stackforce.github.io/LoRaMac-doc/_p_o_r_t_i_n_g__g_u_
 * NucleoLxxx
   * [NucleoLxxx platforms documentation](Doc/NucleoLxxx-platform.md)
 
+* SKiM880B, SKiM980A, SKiM881AXL
+  * [SKiM88xx platforms documentation](Doc/SKiM88xx-platform.md)
+
 * SAML21
   * [SAML21 platform documentation](Doc/SAML21-platform.md)