Merge pull request cheat#55 from ochaloup/asciidoctor-cheatsheet

Add asciidoctor syntax cheatsheet

asciidoctor

@@ -0,0 +1,128 @@
+# headers
+= h1 header
+== h2 header
+
+
+# blocks
+[quote, Somebody, Who is somebody]
+____
+Quote something
+____
+//
+NOTE: Some note
+//
+[WARNING]
+====
+Some warning
+====
+
+# lists
+.Un-ordered list with a title
+* list item
+** sub-list item
+- hypen as sub-sub-list item
++
+that continues at the next line
+- {blank}
++
+----
+complex content of an item
+----
+
+[%reversed,start=4]
+.Ordered list; reversed, started at 4
+. ordered list item
+.. ordered list sub-item
+. another list item
+
+# separating adjacent lists (surrounded by blank lines)
+//-
+
+# checklist
+- [*] checked
+- [x] also checked
+- [ ] not checked
+
+Description list item:: definition
+[horizontal]
+Description list item #2:: definition
+
+
+# links
+Automatic link http://example.com or
+http://example.com[link with title and attributes,role=external,window=_blank]
+link:../README.adoc[Relative link to open the README file]
+
+
+# cross reference links
+[[an-anchor]]inline anchor, [#other-anchor]#applied to a phrase#
+Reference to <<an-anchor>> or to <<other-anchor,the other anchor>>
+
+
+# image
+image:image.png[Alt text, title="Inline image"]
+
+.Block image title
+[caption="Figure 1: ",link=http://example.com/image.png]
+image::image.jpg[Alt text, 300, 200]
+
+
+# code
+....
+literal block
+....
+
+:variable: 123
+.Source code title
+[source,asciidoc,subs="+quotes,attributes+",options="nowrap"]
+----
+:toc: right  # <1>
+// with var substitution (attributes+)
+:variable: definition, the value is {variable}
+// with the markup substitution (+quotes)
+// no wrapping long lines (nowrap)
+----
+<1> Asciidoctor sytax for the table of content
+
+# include source code, stripping indentation
+[source,asciidoc,indent=0]
+----
+include::doc/document.adoc[lines=5..10]
+----
+
+# formatting
+*bold*, **un**constrained
+_italic_, __un__constrained
+`monospace`, ``un``constrained
+`[underline]#Underline text#`
+`[overline]#overline text#`
+`[line-through]#strikethrough#`
+`[blue line-through]*bold blue and line-through*.`
+
+# comment
+// text in the comment
+
+# horizontal rules (hr)
+'''
+
+Non-breaking space {nbsp}
+Break at the end of +
+line
+
+# tables
+.Table title
+[caption="Table 2: "]
+|===
+| Name | Description
+//
+| Asciidoctor
+| Awesome way to write documentation
+//
+2+| This cell spans 2 columns
+//
+.2+| This cell spans 2 rows
+//
+| Line at the side of the spanned rows
+| Another line
+//
+|===