moved the entries up one folder, added the folder to the keywords

games/micropolis_js.md

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+# micropolisJS
+
+_A port of Micropolis to JS/HTML5._
+
+- Home: http://www.graememcc.co.uk/micropolisJS/
+- State: mature
+- Keywords: simulation, browser
+- Code repository: https://github.com/graememcc/micropolisJS.git
+- Code language: C++, Java, Python
+- Code license: GPL-3.0
+
+## Building