Update README.md

README.md

@@ -4,3 +4,8 @@ Author chose C++ and PostgreSQL languages for solving the problem.
 PostgreSQL choise is based on given DB language. Also it was interesting to learn about C++.
 
 As a result, during the work was written Web server, which responses to a form with webpage where are charts.
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+To work server requers:
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+1) Linux. Given database supports only requests from Linux OS.
+2) "-lpq" compilation and build parameter. Is needed for PostgreSQL compilation.
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