Version 1.0

Linenoise is used in multiple projects for enough time, let's tag this
commit with a version number as requested into issue #88, so that we
have an initial reference.

Given the nature of the library, the version was also added in the
linenoise C and header file as well so that it is easy to realize for
people having a copy embedded somewhere if they are using the latest
version.

linenoise.c

-/* linenoise.c -- guerrilla line editing library against the idea that a
- * line editing lib needs to be 20,000 lines of C code.
+/* linenoise.c -- VERSION 1.0
+ *
+ * Guerrilla line editing library against the idea that a line editing lib
+ * needs to be 20,000 lines of C code.
  *
  * You can find the latest source code at:
  *

linenoise.h

-/* linenoise.h -- guerrilla line editing library against the idea that a
- * line editing lib needs to be 20,000 lines of C code.
+/* linenoise.h -- VERSION 1.0
+ *
+ * Guerrilla line editing library against the idea that a line editing lib
+ * needs to be 20,000 lines of C code.
  *
  * See linenoise.c for more information.
  *