Optick is windows only reg aclysma#6

Cargo.toml

@@ -21,7 +21,7 @@ categories = ["development-tools::profiling"]
 
 [dependencies]
 puffin = { version = "0.3", optional = true }
-optick = { version = "1.3", optional = true }
+optick = { version = "1.3", optional = true } # optick is Windows only
 tracing = { version = "0.1", optional = true }
 tracy-client = { version = "0.10", optional = true }
 superluminal-perf = { version = "0.1", optional = true }
@@ -42,7 +42,7 @@ tracing-subscriber = { version = "0.2" }
 [features]
 default = ["procmacros"]
 profile-with-puffin = ["puffin"]
-profile-with-optick = ["optick"]
+profile-with-optick = ["optick"] # optick is Windows only
 profile-with-superluminal = ["superluminal-perf"]
 profile-with-tracing = ["tracing"]
 profile-with-tracy = ["tracy-client"]