Add 2nd example to chapter2

v2/chapter2/2-selectByOtherArguments.py

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+from urllib.request import urlopen
+from bs4 import BeautifulSoup
+
+
+html = urlopen('http://www.pythonscraping.com/pages/warandpeace.html')
+bs = BeautifulSoup(html, "html.parser")
+
+# Select by tags
+titles = bs.find_all(['h1', 'h2','h3','h4','h5','h6'])
+print([title for title in titles])
+
+# Select by tag attributes
+allText = bs.find_all('span', {'class':{'green', 'red'}})
+print([text for text in allText])
+
+# Select by text content of tags
+nameList = bs.find_all(text='the prince')
+print(len(nameList))
+
+# Select by tags that contains a particular attribute
+titles = bs.find_all(id='title', class_='text')
+print([title for title in titles])