Update to allow using a cash instance to create a Position (#15)

Author: ScottPJones

Project.toml

@@ -3,7 +3,7 @@ uuid = "2a4f3d17-849a-48a1-809e-d780c70a95a0"
 license = "MIT"
 desc = "Financial Instruments"
 authors = ["Eric Forgy <Eric.Forgy@cavalre.com>", "ScottPJones <scottjones@alum.mit.edu>"]
-version = "0.7.0"
+version = "0.8.0"
 
 [deps]
 Currencies = "0fd90b74-7c1f-579e-9252-02cd883047b9"

README.md

@@ -1,26 +1,10 @@
-[pkg-url]: https://github.com/JuliaFinance/Instruments.jl.git
-
-[release]:      https://img.shields.io/github/release/JuliaFinance/Instruments.jl.svg
-[release-date]: https://img.shields.io/github/release-date/JuliaFinance/Instruments.jl.svg
-
-[license-img]:  http://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat
-[license-url]:  LICENSE.md
-[julia-url]:          https://github.com/JuliaLang/julia
-[julia-release]:      https://img.shields.io/github/release/JuliaLang/julia.svg
-
 [travis-url]:   https://travis-ci.org/JuliaFinance/Instruments.jl
-[travis-s-img]: https://travis-ci.org/JuliaFinance/Instruments.jl.svg
-[travis-m-img]: https://travis-ci.org/JuliaFinance/Instruments.jl.svg?branch=master
-
-[contrib]:    https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat
+[travis-img]: https://travis-ci.org/JuliaFinance/Instruments.jl.svg
 
 [codecov-url]:  https://codecov.io/gh/JuliaFinance/Instruments.jl
 [codecov-img]:  https://codecov.io/gh/JuliaFinance/Instruments.jl/branch/master/graph/badge.svg
 
-| **Julia Version** | **Unit Tests** | **Code Coverage** |
-|:------------------:|:------------------:|:---------------------:|
-| [![][julia-release]][julia-url] | [![][travis-s-img]][travis-url] | [![][codecov-img]][codecov-url]
-| Latest | [![][travis-m-img]][travis-url] | [![][codecov-img]][codecov-url]
+[![][travis-img]][travis-url] [![][codecov-img]][codecov-url]
 
 # Instruments.jl
 

src/Instruments.jl

@@ -88,6 +88,10 @@ Base.:*(p::Position, k::Real) = k * p
 Base.:*(val::Real, ::Type{I}) where {I<:Instrument} = Position{I}(val)
 Base.:*(::Type{I}, val::Real) where {I<:Instrument} = Position{I}(val)
 
+# Handle instances of Instruments also
+Base.:*(val::Real, ::I) where {I<:Instrument} = Position{I}(val)
+Base.:*(::I, val::Real) where {I<:Instrument} = Position{I}(val)
+
 Base.show(io::IO, ::I) where {I<:Instrument} = print(io, symbol(I))
 Base.show(io::IO, p::Position{I}) where {I<:Instrument} = print(io, p.amount, symbol(I))