Move Polynomial.jl -> Polynomials.jl
Reverse order of coefficients
Implement the rest of the functionality. All tests pass
Update README.md

Adjusted for the monomial order.
Add vector version of polyint/der
Merge pull request #1 from daviddelaat/patch-1

Update README.md
Added the option to specify the order of the derivative to polyder.
add abs() to check on coefficients for degree
Merge pull request #4 from jverzani/patch-1

add abs() to check on coefficients for degree
Merge pull request #3 from pwl/master

Added the option to specify the order of the derivative to polyder.
Add special method for 1d arrays
Fix deprecation warnings for @test_throws
Fix #2
modify *

There was an issue with additional 0s being added at the end. For example, this was causing an error


```
using Polynomials
x = poly([0.0])
polyder(x^7)
```

as (x^7).a had 26 terms.

This might be better addressed with just `n=length(p1) - 1`.
Merge pull request #6 from jverzani/patch-2

modify *
modify degree for Poly([0.0]); polyder

Two small suggestions:

* modify degree to return 0 for Poly([0.0]). Otherwise, recent change to * has issues
* change factorial(i)/factorial(i-order) to prod(i-order+1:i) in polyder to avoid OverFlow error.
add degree test, modify divrem for 0 degree
Merge pull request #8 from jverzani/patch-3

modify degree for Poly([0.0]); polyder
Operators now set the variable of the returned polynomial.