Add configuration samples

samples/isinstall.conf

+# isinstall program configuration
+[isinstall]
+debug = False
+
+# smartjog official installsystems repository
+[smartjog]
+image = http://installsystems.boot.wan/images
+data = http://installsystems.boot.wan/data
+
+# localhost testing repository
+[localhost]
+image = http://localhost/images
+data = http://localhost/data

samples/isrepo.conf

+[isrepo]
+cache = /tmp/cache
+
+[smartjog]
+image = /home/installsystemsng/image
+data = /home/installsystemsng/data
+chown = seblu
+chgroup = sebgp
+fchmod = 644
+dchmod = 755