added subtract
added divide function
added the add function
added cubed method
Square root function
added double
added super
multiply entered
cubed method
Merge branch 'exponents'
merged brads code
Merge branch 'master' of github.com:PhoenixRockit/calc
merged
Merge branch 'super'
Merge branch 'master' of github.com:PhoenixRockit/calc
merged
Merge branch 'squareroot'
merged
merged add
Merge branch 'addition'