Merge pull request #81 from dstepanov/windowsBug

Fix "java.lang.IllegalArgumentException: character to be escaped is missing" on Windows machine

accurest-core/src/main/groovy/io/codearte/accurest/util/NamesUtil.groovy

@@ -40,6 +40,6 @@ class NamesUtil {
 	}
 
 	static String packageToDirectory(String packageName) {
-		return packageName.replaceAll('\\.', File.separator)
+		return packageName.replace('.' as char, File.separatorChar)
 	}
 }