"By 2015, there will be 1 million charging stations in the world."
Well, right now, there are about 22,000 in the United States.
Does the rest of the world have 978,000?
Well, Chargepoint alone - one of the bigger charging networks - has around 20,000 locations in the US, and claims to be adding 500 per month.
There are other charging networks, too, so we know the number of public charge locations is higher than this.
Then, don't forget that every electric car owner owns a personal charging station. Wikipedia says the number of plug-in cars in the US today is over 260,000.
Altogether, it's probably around 300,000 installed charging stations in the US today.
Wikipedia also says that the US represents 43% of the plug-in car market, with the other 57% in other countries. Assuming the same proportions of chargers to electric vehicles applies to them, the worldwide total would probably be around 697,000 charging stations.
So no, the prediction of 1 million charging stations probably won't be met by the start of 2015. But it could be close to that number by the end of 2015.