added readme for Windows version (it will be continued)

README_decker.md

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+## What's this?
+
+This is a first build of **MarketMaker** app from barterDEX for Windows (64-bit) platform. This branch includes all that you need to build marketmaker for Windows. 64-bit build uses MSVC 2015 as a default C/C++ compiler, to build - simply open *marketmaker.sln* project file via File -> Open -> Project/Solution ... next choose Release / x64 configuration and build solution. Your binaries will be placed x64\Release folder. To run marketmaker you also need following dll libraries:
+
+- libcurl.dll
+- nanomsg.dll
+- curl.exe (win64 curl binary, used is scripts)
+
+It already included in this branch.
+
+## How to use?
+
+Please, refer to original barterDEX documentation and Komodo Platform + SuperNET resources to learn how to work this it. Later i will add some examples and useful links here.
+
+Important, coins.json on Windows shouldn't contain coins which haven't running daemons. Add to coins.json only coins that you plan to use, in other case starting marketmaker will too long: about 4 seconds on each not-running coin.
+
+Get the latest binary release from release section and step-by-step run cmd files:
+
+- 1-client.cmd - this runs marketmaker with passphrase taken from a passphrase file.
+- 2-getuserpass.cmd - this will save and output your userpass in userpass file for future use.
+- 3-orderbook.cmd - to get an orderbook (if u downloaded binary release from release section - it's have only REVS in coins.json and orderbook will be shown at KMD/REVS coins pair).
+
+Other scripts will be post later ... this is just for example that it works.
+
+