Added README.md file for Max Consecutive Ones

Author: sanchitgd

485-max-consecutive-ones/README.md

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+<h2><a href="https://leetcode.com/problems/max-consecutive-ones">Max Consecutive Ones</a></h2> <img src='https://img.shields.io/badge/Difficulty-Easy-brightgreen' alt='Difficulty: Easy' /><hr><p>Given a binary array <code>nums</code>, return <em>the maximum number of consecutive </em><code>1</code><em>&#39;s in the array</em>.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<pre>
+<strong>Input:</strong> nums = [1,1,0,1,1,1]
+<strong>Output:</strong> 3
+<strong>Explanation:</strong> The first two digits or the last three digits are consecutive 1s. The maximum number of consecutive 1s is 3.
+</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<pre>
+<strong>Input:</strong> nums = [1,0,1,1,0,1]
+<strong>Output:</strong> 2
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+<li><code>1 &lt;= nums.length &lt;= 10<sup>5</sup></code></li>
+<li><code>nums[i]</code> is either <code>0</code> or <code>1</code>.</li>
+</ul>