adding week1 material

...mples/week1/introductionToJavascript-1/stringMethods.html

...les/week1/introductionToJavascript-1/templateLiteral.html

codeExamples/week1/introductionToJavascript-1/test.js

...xamples/week1/introductionToJavascript-1/truthyFalsy.html

...mples/week1/introductionToJavascript-1/validityCheck.html

...xamples/week1/introductionToJavascript-1/varHoisting.html

...es/week1/introductionToJavascript-2/addingProperties.html

...xamples/week1/introductionToJavascript-2/arrayFilter.html

...xamples/week1/introductionToJavascript-2/arrayReduce.html

codeExamples/week1/introductionToJavascript-2/iife.html

...mples/week1/introductionToJavascript-2/isPrototypeOf.html

codeExamples/week1/introductionToJavascript-2/map.html

codeExamples/week1/introductionToJavascript-2/objects.html

codeExamples/week1/introductionToJavascript-2/set.html

codeExamples/week1/introductionToJavascript-2/symbol.html

codeExamples/week1/introductionToJavascript-2/symbolUse.html

codeExamples/week1/introductionToJavascript-2/valueOf.html

codeExamples/week1/nodeBasics/SampleWebpage.html

codeExamples/week1/nodeBasics/add.js

codeExamples/week1/nodeBasics/eventEmitterExample.js