add an example of a plot

.travis.yml

@@ -10,6 +10,7 @@ julia:
 matrix:
   allow_failures:
     - julia: nightly
+    - julia: 0.7
 branches:
   only:
     - master
@@ -20,7 +21,9 @@ jobs:
       julia: 0.6
       os: linux
       script:
-        - julia -e 'Pkg.clone(pwd()); Pkg.build("Literate"); Pkg.add("Documenter"); cd(Pkg.dir("Literate")); include("docs/make.jl")'
+        - julia -e 'Pkg.clone(pwd()); Pkg.build("Literate")'
+        - julia -e 'Pkg.add("Documenter"); Pkg.add("Plots"); Pkg.build("Plots")'
+        - julia -e 'cd(Pkg.dir("Literate")); include("docs/make.jl")'
 notifications:
   email: false
 git:

docs/make.jl

@@ -1,6 +1,10 @@
 using Documenter
 using Literate
 
+# import these to make sure they precompile here instead of when generating output
+import Plots
+import GR
+
 # generate examples
 EXAMPLE = joinpath(@__DIR__, "..", "examples", "example.jl")
 OUTPUT = joinpath(@__DIR__, "src/generated")

examples/example.jl

@@ -59,6 +59,16 @@ end
 
 foo()
 
+# Both Documenter's `@example` block and notebooks can display images. Here is an example
+# where we generate a simple plot using the
+# [Plots.jl](https://github.com/JuliaPlots/Plots.jl) package
+
+using Plots
+x = linspace(0, 6π, 1000)
+y1 = sin.(x)
+y2 = cos.(x)
+plot(x, [y1, y2])
+
 # ### Custom processing
 #
 # It is possible to give Literate custom pre- and post-processing functions.