Update README.md

Author: sailoog

README.md

@@ -5,7 +5,7 @@ OpenPlotter
 What is OpenPlotter?
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-OpenPlotter is a combination of software and hardware to be used as navigational aid on small and medium boats. It works on ARM computers like the [Raspberry Pi](https://www.raspberrypi.org/) and is open-source, low-cost and low-consumption. Its design is modular, so that you just implement what you need. Do it yourself.
+OpenPlotter is a combination of software and hardware to be used as navigational aid on small and medium boats. It works on ARM computers like the [Raspberry Pi](https://www.raspberrypi.org/) and is open-source, low-cost and low-consumption. Its design is modular, so you have just to implement what your boat needs. Do it yourself.
 
 Features
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