Updated docs with ispindel web interface

src_docs/source/installation.rst

@@ -3,6 +3,12 @@
 Installation 
 ------------
 
+You have these 3 options for flashing this firmware:
+
+* Brewflasher via USB serial
+* Esptool via USB serial
+* iSpindel web interface
+
 Brewflasher
 ===========
 
@@ -16,7 +22,7 @@ on both Windows and Mac. You can download the latest version from here: `Brewfla
 Binaries
 ********
 
-In the /bin directory you will find 2 different firmware builds;
+In the /bin directory you will find 3 different firmware builds;
 
 * **firmware.bin**
 
@@ -26,6 +32,10 @@ In the /bin directory you will find 2 different firmware builds;
 
   This version also submits performance data to an influx database with detailed execution times.
 
+* **firmware32.bin**
+
+  This is the standard release build for an ESP32 variant
+
 In these versions all the html files are embedded in the binaries. The file system is currently only used for storing 
 the configuration file. 
 
@@ -49,6 +59,14 @@ If there are issues you can try do erase the flash first using this command;
 
 ``esptool.py --port COM4 erase_flash``
 
+iSpindel
+========
+
+If you already have the device flashed with iSpindel firmware you can go into the configuration mode where you will find
+an option for updating firmware. The option is under the maintence meny.
+
+Select the esp8266 version of the firmware called firmware.bin and press upload. 
+
 Serial Monitoring
 =================