Add manpage for the IDE.

[CONFIGURATION]
* NEW: Add manpage for the IDE.

app/man/Makefile.am

@@ -1 +1 @@
-dist_man_MANS = gbs3.1 gbw3.1
+dist_man_MANS = gambas3.1 gbs3.1 gbw3.1

app/man/gambas3.1

@@ -0,0 +1,53 @@
+.TH "Gambas" "1" "October 2013" "Ubuntu" ""
+
+.SH "NAME"
+gambas3 \- Integrated Development Environment
+
+.SH "SYNOPSIS"
+.B gambas3
+[options] [<project directory>]
+
+.SH "DESCRIPTION"
+Gambas is, before all, a Basic language with object extensions.
+A program written with Gambas is a set of files. Each file describes
+a class, in terms of object programming. The class files are compiled,
+then executed by an interpreter. From this point of view, it is
+very inspired by Java.
+
+Gambas is made up of the following programs:
+
+    * A compiler.
+    * An interpreter.
+    * An archiver.
+    * A graphical user interface component.
+    * A development environment.
+
+The development environment is written with Gambas itself, so that you can
+see the abilities of the language.
+
+\fBgambas3\fR starts the Integrated Development Environment.
+
+.SH "OPTIONS"
+.TP
+\fB\-V, --version\fR
+display version
+.TP
+\fB\-L, --license\fR
+display license
+.TP
+\fB\-h, --help\fR
+display help and exit
+
+.SH "AVAILABILITY"
+The latest version of Gambas can always be obtained from
+\fBgambas.sourceforge.net\fR, documentation about the language is at
+\fBhttp://gambaswiki.org/wiki\fR.
+
+.SH "REPORTING BUGS"
+Report bugs to \fBhttp://gambaswiki.org/bugtracker\fR
+
+.SH "COPYRIGHT"
+Copyright\(co Benoît Minisini <g4mba5@gmail.com>;
+.PP
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.