Fixes for conanfile.py

conanfile.py

@@ -15,8 +15,8 @@ class CreatureLibConan(ConanFile):
 
     def build(self):
         cmake = CMake(self)
-        self.output.info("Target OS: %s." % (self.settings["os"]))
-        if self.settings["os"] == "Windows":
+        self.output.info("Target OS: %s." % self.settings.os)
+        if self.settings.os == "Windows":
             self.output.warn("Noticed Windows target, setting Cmake WINDOWS=On.")
             cmake.definitions["WINDOWS"] = "On"
         cmake.configure()