Update README.md

Author: odow

docs/README.md

@@ -6,16 +6,16 @@ JuMP's documentation is written with [Documenter.jl](https://github.com/JuliaDoc
 
 ## Initial setup
 
-To build the documentation, you need to do a series of initialization steps. You
-only need to do this once!
+To build the documentation, you need to do a series of initialization steps. 
+However, you only need to do this once!
 
 First, you will need a local copy of JuMP. If you don't have one already, run:
 ```
 $ julia -e 'import Pkg; Pkg.develop("JuMP")'
 ```
 
 This will create a copy of JuMP at `~/.julia/dev/JuMP`. (On Windows, this will
-be located at `C:\\Users\\<your_user_name>\\.julia\dev\JuMP`.) Open a terminal,
+be located at `C:\\Users\\<your_user_name>\\.julia\\dev\\JuMP`.) Open a terminal,
 and `cd` to that directory:
 ```
 $ cd ~/.julia/dev/JuMP
@@ -26,6 +26,8 @@ The next step is to setup the `docs` environment.
 $ julia --project=docs -e 'import Pkg; Pkg.instantiate(); Pkg.develop(Pkg.PackageSpec(path="."))'
 ```
 
+Now you're ready to build the documentation.
+
 ## Building the docs
 
 Build the docs as follows: