DataFrame.to_string(index=False) alignment bug

[jzwinck]

import pandas as pd
df = pd.DataFrame()
df['a'] = ['hello world', 'hi']
df['b'] = 0
print(df.to_string(index=False))

Problem description

It fails to align the first column header:

a  b
hello world  0
         hi  0

Expected Output

          a  b
hello world  0
         hi  0

Output of pd.show_versions()

pandas: 0.19.2
python: 3.5.1
OS: Linux
LC_ALL: None
LANG: en_US.UTF-8
LOCALE: en_US.UTF-8

[jreback]

dupe of #13032

PR's to fix welcome!