Parsing key-value pairs

**Issue by [mr-miles](https://github.com/mr-miles)**
_Wednesday Mar 26, 2014 at 18:36 GMT_
_Originally opened as https://github.com/gsscoder/commandline/issues/122_

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Is it possible to use the parser to populate key-value pairs?

So something like "myapp.exe -v:a=x -v:b=y -v:c=z" would populate a property v which is a Dictionary with (a,x), (b,y), (c,z) values?

I want to use the parser to specify replacements to be made on a text file

Great package by the way!

首先檢查命令列解析器的選項解析和屬性繫結進入點，以了解目前如何處理重複的鍵值選項。重現使用 -v:a=x、-v:b=y 和 -v:c=z 的範例；當解析器能夠使用這些鍵值對填入 Dictionary，或明確記錄不支援此功能的原因時，即視為完成。

由索引模型根據 Issue 內容生成。