added palindromes exercise

palindromes/README.md

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+# Exercise XX - palindromes
+
+Write a function that determines whether or not a given string is a palindrome.
+
+A palindrome is a string that is spelled the same both forwards and backwards, usually without considering punctuation or word breaks:
+
+### some palindromes:
+  - A car, a man, a maraca.
+  - Rats live on no evil star.
+  - Lid off a daffodil.
+  - Animal loots foliated detail of stool lamina.
+  - A nut for a jar of tuna.
+  - A car, a man, a maraca.
+
+```javascript
+palindromes('racecar') // true
+palindromes('tacos') // false
+```
+
+

palindromes/palindromes.js

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+var palindromes = function() {
+
+}
+
+module.exports = palindromes

palindromes/palindromes.spec.js

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+var palindromes = require('./palindromes')
+
+describe('palindromes', function() {
+  it('works with single words', function() {
+    expect(palindromes('racecar')).toEqual(true);
+  });
+  xit('works with punctuation', function() {
+    expect(palindromes('Racecar!')).toEqual(true);
+  });
+  xit('works with multiple words', function() {
+    expect(palindromes('A car, a man, a maraca.')).toEqual(true);
+  });
+  xit('works with multiple words', function() {
+    expect(palindromes('Animal loots foliated detail of stool lamina.')).toEqual(true);
+  });
+  xit('doesn\'t just always return true', function() {
+    expect(palindromes('ZZZZ car, a man, a maraca.')).toEqual(false);
+  });
+
+});