Switch docs from RST to in-source Markdown + Documenter (#228)

Author: jrevels

.gitignore

@@ -1,3 +1,7 @@
-.DS_Store
+*.jl.cov
+*.jl.*.cov
+*.jl.mem
+*.DS_Store
+docs/build/
+docs/site/
 benchmark_data/
-build/

.nojekyll

@@ -12,3 +12,5 @@ script:
     - julia -O3 -e 'include(joinpath(Pkg.dir("ForwardDiff"), "test/SIMDTest.jl"))';
 after_success:
     - julia -e 'cd(Pkg.dir("ForwardDiff")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder())'
+    - julia -e 'Pkg.add("Documenter")'
+    - julia -e 'cd(Pkg.dir("ForwardDiff")); include(joinpath("docs", "make.jl"))'

.travis.yml

@@ -5,7 +5,8 @@
 [![ForwardDiff](http://pkg.julialang.org/badges/ForwardDiff_0.5.svg)](http://pkg.julialang.org/?pkg=ForwardDiff)
 [![ForwardDiff](http://pkg.julialang.org/badges/ForwardDiff_0.6.svg)](http://pkg.julialang.org/?pkg=ForwardDiff)
 
-**[Go To ForwardDiff's Documentation](http://www.juliadiff.org/ForwardDiff.jl/)**
+[![](https://img.shields.io/badge/docs-stable-blue.svg)](http://www.juliadiff.org/ForwardDiff.jl/stable)
+[![](https://img.shields.io/badge/docs-latest-blue.svg)](http://www.juliadiff.org/ForwardDiff.jl/latest)
 
 # ForwardDiff.jl