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add boolean and equality

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	`1`	`+## Booleans and Equality`
	`2`	`+`
	`3`	+- A boolean variable can be either `true` or `false` .
	`4`	`+`
	`5`	`+- Example:`
	`6`	`+`
	`7`	+ ```javascript
	`8`	`+ const age = 18;`
	`9`	`+ const ofAge = age > 18;`
	`10`	`+ console.log(ofAge); // false`
	`11`	`+`
	`12`	+ ```
	`13`	`+`
	`14`	`+- Equal signs:`
	`15`	`+`
	`16`	+ - `=` sign: used for assignment/ updation of values
	`17`	`+`
	`18`	+ ```javascript
	`19`	`+ let name = 'Soumya';`
	`20`	`+ name = 'Raja';`
	`21`	`+`
	`22`	+ ```
	`23`	`+`
	`24`	+ - Out of `==` and `===`, you should almost always use `===`.
	`25`	`+`
	`26`	+ - `==` and `===` are used for equality comparison.
	`27`	`+`
	`28`	+ ```javascript
	`29`	`+ console.log(age === 18); // true`
	`30`	`+`
	`31`	+ ```
	`32`	`+`
	`33`	+ - `==` vs `===` :
	`34`	`+`
	`35`	+ `===` checks both type & value.
	`36`	`+`
	`37`	+ `==` only checks value.
	`38`	`+`
	`39`	+ ```javascript
	`40`	`+ 10 === "10" // false as values are same but types are not`
	`41`	`+ 10 == "10" // true as values are same`
	`42`	`+`
	`43`	+ ```
	`44`	`+`

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