Add missing dash to tutorials.

Closes #268.

Changes

@@ -15,6 +15,8 @@ Revision history for Perl extension App::Sqitch
        `etc` files to better match the `--installdirs` option, which defaults
        to the "site" directories. Thanks to @carragom for the pull request
        (#265).
+     - Added missing dash to `-engine` in sample calls to `sqitch init` in the
+       tutorials. Thanks to Andrew Dunstan for the spot (Issue #268).
 
 0.9993  2015-08-17T17:55:26Z
      [Bug Fixes]

lib/sqitchtutorial-firebird.pod

@@ -53,7 +53,7 @@ project must have a name associated with it, and, optionally, a unique URI. We
 recommend including the URI, as it increases the uniqueness of object
 identifiers internally, so let's specify one when we initialize Sqitch:
 
-  > sqitch init flipr --uri https://github.com/theory/sqitch-firebird-intro/ -engine firebird
+  > sqitch init flipr --uri https://github.com/theory/sqitch-firebird-intro/ --engine firebird
   Created sqitch.conf
   Created sqitch.plan
   Created deploy/

lib/sqitchtutorial-oracle.pod

@@ -94,7 +94,7 @@ project must have a name associated with it, and, optionally, a unique URI. We
 recommend including the URI, as it increases the uniqueness of object
 identifiers internally, so let's specify one when we initialize Sqitch:
 
-  > sqitch init flipr --uri https://github.com/theory/sqitch-oracle-intro/ -engine oracle
+  > sqitch init flipr --uri https://github.com/theory/sqitch-oracle-intro/ --engine oracle
   Created sqitch.conf
   Created sqitch.plan
   Created deploy/

lib/sqitchtutorial-sqlite.pod

@@ -52,7 +52,7 @@ project must have a name associated with it, and, optionally, a unique URI. We
 recommend including the URI, as it increases the uniqueness of object
 identifiers internally, so let's specify one when we initialize Sqitch:
 
-  > sqitch init flipr --uri https://github.com/theory/sqitch-sqlite-intro/ -engine sqlite
+  > sqitch init flipr --uri https://github.com/theory/sqitch-sqlite-intro/ --engine sqlite
   Created sqitch.conf
   Created sqitch.plan
   Created deploy/

lib/sqitchtutorial-vertica.pod

@@ -101,7 +101,7 @@ project must have a name associated with it, and, optionally, a unique URI. We
 recommend including the URI, as it increases the uniqueness of object
 identifiers internally, so let's specify one when we initialize Sqitch:
 
-  > sqitch init flipr --uri https://github.com/theory/sqitch-vertica-intro/ -engine vertica
+  > sqitch init flipr --uri https://github.com/theory/sqitch-vertica-intro/ --engine vertica
   Created sqitch.conf
   Created sqitch.plan
   Created deploy/

lib/sqitchtutorial.pod

@@ -51,7 +51,7 @@ project must have a name associated with it, and, optionally, a unique URI. We
 recommend including the URI, as it increases the uniqueness of object
 identifiers internally, so let's specify one when we initialize Sqitch:
 
-  > sqitch init flipr --uri https://github.com/theory/sqitch-intro/ -engine pg
+  > sqitch init flipr --uri https://github.com/theory/sqitch-intro/ --engine pg
   Created sqitch.conf
   Created sqitch.plan
   Created deploy/