Merge pull request #4 from jamesnvc/master

Clarify/fix documentation in README

README.md

@@ -42,10 +42,10 @@ the `HostOS` library header.
 #include <Kaleidoscope/HostOS-select.h>
 
 void someFunction(void) {
-  if (HostOS.os() == kaleidoscope::HostOS::LINUX) {
+  if (HostOS.os() == kaleidoscope::hostos::LINUX) {
     // do something linux-y
   }
-  if (HostOS.os() == kaleidoscope::HostOS::OSX) {
+  if (HostOS.os() == kaleidoscope::hostos::OSX) {
     // do something OSX-y
   }
 }
@@ -73,6 +73,15 @@ The extension provides the following methods on the `HostOS` singleton:
 > Sets the type of the host OS, overriding any previous value. The type is then
 > stored in EEPROM for persistence.
 
+## Host OS Values
+
+The OS type (i.e. the return type of `.os()` and the arguments to `.os(type)`) will be one of the following:
+
+   - `kaleidoscope::hostos::LINUX`
+   - `kaleidoscope::hostos::OSX`
+   - `kaleidoscope::hostos::WINDOWS`
+   - `kaleidoscope::hostos::OTHER`
+
 ## Dependencies
 
 * [Kaleidoscope-EEPROM-Settings](https://github.com/keyboardio/Kaleidoscope-EEPROM-Settings)