Move ./technical/api-command.txt to ./howto/new-command.txt

The contents of this document does not describe any particular API, but
is more about the way to add a new command, which belongs to the "How To"
section of the documentation suite.

Signed-off-by: Thomas Ackermann <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: tacker66

Documentation/Makefile

@@ -21,6 +21,7 @@ ARTICLES += git-tools
 ARTICLES += git-bisect-lk2009
 # with their own formatting rules.
 SP_ARTICLES = user-manual
+SP_ARTICLES += howto/new-command
 SP_ARTICLES += howto/revert-branch-rebase
 SP_ARTICLES += howto/using-merge-subtree
 SP_ARTICLES += howto/using-signed-tag-in-pull-request

Documentation/technical/api-command.txt renamed to Documentation/howto/new-command.txt

@@ -1,5 +1,10 @@
-Integrating new subcommands
-===========================
+From: Eric S. Raymond <[email protected]>
+Abstract: This is how-to documentation for people who want to add extension
+ commands to git.  It should be read alongside api-builtin.txt.
+Content-type: text/asciidoc
+
+How to integrate new subcommands
+================================
 
 This is how-to documentation for people who want to add extension
 commands to git.  It should be read alongside api-builtin.txt.