Update .gitignore, README

.gitignore

+# Ignore
 */**/build
-build/
-!build/*.pdf
\ No newline at end of file
+build/*
+
+# Allow
+!build/*.pdf
+

README.asciidoc

@@ -39,9 +39,9 @@ build, view, preview, log, clean, distclean, help
 
 Three environment variables are used to configure the behavior of those targets:
 
-* `*pass:q[<font color="#118F7D">$TARGET</font>]*` is used to specify the tex file to compile (default: `pass:q[<font color="#118F7D">$BASENAME</font>]`).
-* `*pass:q[<font color="#118F7D">$VARIANTS</font>]*` is used to specify none, one, or multiple variants (default: `pass:q[<font color="#118F7D">$BASEVARIANTS</font>]`).
-* `*pass:q[<font color="#118F7D">$OPTS</font>]*` is used to pass additional options to latexmk.
+* `*$TARGET*` is used to specify the tex file to compile (default: `$BASENAME`).
+* `*$VARIANTS*` is used to specify none, one, or multiple variants (default: `$BASEVARIANTS`).
+* `*$OPTS*` is used to pass additional options to latexmk.
 
 
 ---
@@ -52,10 +52,10 @@ Three environment variables are used to configure the behavior of those targets:
 [subs=+macros]
 ----
 pass:q[
-$ make <font color="#118F7D">*OPTS*</font>=-gg
-$ make <font color="#118F7D">*TARGET*</font>=resources/tex/figures/logo *view*
-$ make <font color="#118F7D">*VARIANTS*</font>=handout,presentation *build*
-$ make <font color="#118F7D">*VARIANTS*</font>=, *view*
+$ make *OPTS*=-gg
+$ make *TARGET*=resources/tex/figures/logo *view*
+$ make *VARIANTS*=handout,presentation *build*
+$ make *VARIANTS*=, *view*
 ]
 ----
 ====
@@ -67,8 +67,8 @@ $ make <font color="#118F7D">*VARIANTS*</font>=, *view*
 [subs=+macros]
 ----
 pass:q[
-$ <font color="#118F7D">*TARGET*</font>=resources/tex/intro.tex
-$ <font color="#118F7D">*VARIANTS*</font>=notes
+$ *TARGET*=resources/tex/intro.tex
+$ *VARIANTS*=notes
 $ make
 $ make *preview*
 $ make *clean*