Use $$...$$ instead of equation environment (#72)

docs/src/documenter.md

@@ -41,9 +41,9 @@ if we set `documenter = true`:
   ````
   is replaced with notebook compatible
   ```
-  \begin{equation}
+  $$
   \int f dx
-  \end{equation}
+  $$
   ```
 
 ### [`Literate.script`](@ref):

src/Literate.jl

@@ -157,7 +157,7 @@ function replace_default(content, sym;
         push!(repls, r"^#!nb.*\n?"m => "") # remove #!nb lines
         push!(repls, r"^#jl.*\n?"m => "")  # remove leading #jl lines
         push!(repls, r"^#!jl "m => "")     # remove leading #!jl
-        push!(repls, r"```math(.*?)```"s => s"\\begin{equation}\1\\end{equation}")
+        push!(repls, r"```math(.*?)```"s => s"$$\1$$")
     else # sym === :jl
         push!(repls, r"^#md.*\n?"m => "")  # remove #md lines
         push!(repls, r"^#!md "m => "")     # remove leading #!md

test/runtests.jl

@@ -611,9 +611,9 @@ end
             """
                "source": [
                 "Some math:\\n",
-                "\\\\begin{equation}\\n",
+                "\$\$\\n",
                 "\\\\int f(x) dx\\n",
-                "\\\\end{equation}"
+                "\$\$"
                ]
             """,