config: add support for --bool and --int while setting values

Signed-off-by: Frank Lichtenheld <frank@lichtenheld.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/git-config.txt b/Documentation/git-config.txt
index a445781..5f66a7f 100644
--- a/Documentation/git-config.txt
+++ b/Documentation/git-config.txt
@@ -9,9 +9,9 @@
 SYNOPSIS
 --------
 [verse]
-'git-config' [--system | --global] [-z|--null] name [value [value_regex]]
-'git-config' [--system | --global] --add name value
-'git-config' [--system | --global] --replace-all name [value [value_regex]]
+'git-config' [--system | --global] [type] [-z|--null] name [value [value_regex]]
+'git-config' [--system | --global] [type] --add name value
+'git-config' [--system | --global] [type] --replace-all name [value [value_regex]]
 'git-config' [--system | --global] [type] [-z|--null] --get name [value_regex]
 'git-config' [--system | --global] [type] [-z|--null] --get-all name [value_regex]
 'git-config' [--system | --global] [type] [-z|--null] --get-regexp name_regex [value_regex]
@@ -37,8 +37,7 @@
 The type specifier can be either '--int' or '--bool', which will make
 'git-config' ensure that the variable(s) are of the given type and
 convert the value to the canonical form (simple decimal number for int,
-a "true" or "false" string for bool).  Type specifiers currently only
-take effect for reading operations.  If no type specifier is passed,
+a "true" or "false" string for bool).  If no type specifier is passed,
 no checks or transformations are performed on the value.
 
 This command will fail if: