modified doc page, added examples

examples/replicate/in.replicate.bond.x.noloop

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+# test of replicating system with periodic bonds in x
+
+dimension       2
+atom_style      molecular
+
+read_data       data.bond.x.noloop
+
+replicate       3 3 1
+#replicate       3 3 1 bond/periodic
+
+mass            1 1.0
+velocity        all create 0.001 87287 loop geom
+
+pair_style      lj/cut 2.5
+pair_coeff      1 1 1.0 1.0
+
+bond_style      harmonic
+bond_coeff      1 50.0 1.0
+
+special_bonds   fene
+
+fix             1 all nve
+
+write_data      tmp.data.x.non
+
+dump		1 all image 100 tmp.image.x.non.*.ppm type type &
+                adiam 0.2 bond type 0.1 zoom 1.6
+dump_modify	1 pad 5
+
+#dump		2 all movie 100 tmp.movie.x.non.mpg type type &
+#                adiam 0.2 bond type 0.1 zoom 1.6
+#dump_modify	2 pad 5
+
+run             5000