Just to clarify, your link refers to the income limits that qualify someone for the exit tax (i.e. the tax that you have to pay the IRS upon giving up your citizenship).
If you remain a U.S. citizen but choose to live abroad (i.e. pay taxes in another country), you also have to pay income tax to the IRS, but you can exclude the first $95,100 of your income from being taxed.
Source: www.irs.gov/businesses/small/international/article/0,,id=97130,00.html