added anagram problem

docs/Exercise/JavaScript_Basics/two_strings.md

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+# Anagram
+
+given two strings as parameters, check whether you can make the first string into the second string. Assume the two strings have equal length
+
+# Example 1
+
+String1 = 'team'
+String2 = 'mate'
+
+should return return true because you can rearrange team to make mate
+
+# Example 2
+
+String1 = 'angered'
+String2 = 'enraged'
+
+Returns true
+
+# Example 3
+String1 = 'evils'
+String2 = 'vile'
+
+return false since the length of two strings are not equal