Upgrade `tslint-xo` (#23)

Changes: https://github.com/sindresorhus/tslint-xo/compare/v0.1.0...v0.2.0

package.json

@@ -55,7 +55,7 @@
 		"del-cli": "^1.1.0",
 		"nyc": "^11.2.1",
 		"tslint": "^5.8.0",
-		"tslint-xo": "^0.1.0",
+		"tslint-xo": "^0.2.0",
 		"typescript": "^2.6.1"
 	}
 }

source/lib/predicates/boolean.ts

@@ -1,7 +1,6 @@
 import {Predicate, Context} from './predicate';
 
 export class BooleanPredicate extends Predicate<boolean> {
-
 	constructor(context?: Context) {
 		super('boolean', context);
 	}

source/lib/predicates/number.ts

@@ -2,7 +2,6 @@ import * as is from '@sindresorhus/is';
 import {Predicate, Context} from './predicate';
 
 export class NumberPredicate extends Predicate<number> {
-
 	constructor(context?: Context) {
 		super('number', context);
 	}

source/lib/predicates/predicate.ts

@@ -13,10 +13,11 @@ export interface Context {
 export const validatorSymbol = Symbol('validators');
 
 export abstract class Predicate<T = any> {
-
 	constructor(
 		type: string,
-		private context: Context = { validators: [] }
+		private context: Context = {
+			validators: []
+		}
 	) {
 		this.addValidator({
 			message: value => `Expected argument to be of type \`${type}\` but received type \`${is(value)}\``,

source/lib/predicates/string.ts

@@ -2,7 +2,6 @@ import * as valiDate from 'vali-date';
 import {Predicate, Context} from './predicate';
 
 export class StringPredicate extends Predicate<string> {
-
 	constructor(context?: Context) {
 		super('string', context);
 	}

tslint.json

@@ -1,3 +1,6 @@
 {
-	"extends": "tslint-xo"
+	"extends": "tslint-xo",
+	"rules": {
+		"completed-docs": [true, "methods"]
+	}
 }