Add Oct 2014 - Sep 2015 Minimum Wage rates
- 21 and over: £6.50
- 18-20: £5.13
- under 18: £3.79
- Apprentice: £2.73
- Accommodation rate: £5.08
Updating copy for employer version of the NMW

Updating 2013 to read 2014, the calculations are already changed because the logic is shared
Merge pull request #1159 from alphagov/minimum_wage_october_update

[Merge on 1st October before 10 AM] Minimum wage rates - Add Oct 2014 - Sep 2015 Minimum Wage rates