Created OTPCode.GetCode (markdown)

OTPCode.GetCode.md

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+Namespace: `SimpleOTP`
+
+Assembly: `SimpleOTP.dll`
+
+Gets valid 6 digit or more OTP code.
+```csharp
+public string GetCode(string formatter = "000000");
+```
+### Parameters
+`formatter` `string`
+
+String formatter. Other variation: `"000 000"`
+
+### Returns
+Formatted OTP code string with 6 or more digits.