Merge branch 'es/first-contrib-tutorial' into pu

A WIP of a new tutorial targetting specifically aspiring git-core
developers.

* es/first-contrib-tutorial:
  documentation: add lab for first contribution

Author: gitster

Documentation/.gitignore

@@ -12,6 +12,7 @@ cmds-*.txt
 mergetools-*.txt
 manpage-base-url.xsl
 SubmittingPatches.txt
+MyFirstContribution.txt
 tmp-doc-diff/
 GIT-ASCIIDOCFLAGS
 /GIT-EXCLUDED-PROGRAMS

Documentation/Makefile

@@ -77,6 +77,7 @@ API_DOCS = $(patsubst %.txt,%,$(filter-out technical/api-index-skel.txt technica
 SP_ARTICLES += $(API_DOCS)
 
 TECH_DOCS += SubmittingPatches
+TECH_DOCS += MyFirstContribution
 TECH_DOCS += technical/hash-function-transition
 TECH_DOCS += technical/http-protocol
 TECH_DOCS += technical/index-format
@@ -350,6 +351,7 @@ clean:
 	$(RM) howto-index.txt howto/*.html doc.dep
 	$(RM) technical/*.html technical/api-index.txt
 	$(RM) SubmittingPatches.txt
+	$(RM) MyFirstContribution.txt
 	$(RM) $(cmds_txt) $(mergetools_txt) *.made
 	$(RM) manpage-base-url.xsl
 	$(RM) GIT-ASCIIDOCFLAGS
@@ -393,6 +395,9 @@ $(patsubst %,%.html,$(API_DOCS) technical/api-index $(TECH_DOCS)): %.html : %.tx
 SubmittingPatches.txt: SubmittingPatches
 	$(QUIET_GEN) cp $< $@
 
+MyFirstContribution.txt: MyFirstContribution
+	$(QUIET_GEN) cp $< $@
+
 XSLT = docbook.xsl
 XSLTOPTS = --xinclude --stringparam html.stylesheet docbook-xsl.css