diff --git a/LICENSE.md b/LICENSE.md
index 1978f26..54436a3 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,6 +1,6 @@
 The Percolation.jl package is licensed under the MIT "Expat" License:
 
-> Copyright (c) 2016: goropikari.
+> Copyright (c) 2016: goropikari and contributors
 > 
 > Permission is hereby granted, free of charge, to any person obtaining a copy
 > of this software and associated documentation files (the "Software"), to deal
diff --git a/Project.toml b/Project.toml
new file mode 100644
index 0000000..010bf85
--- /dev/null
+++ b/Project.toml
@@ -0,0 +1,11 @@
+name = "Percolation"
+uuid = "31b34cd4-33dc-40c1-8f72-ebe007ebca36"
+authors = ["Goropikari <goropikari56@gmail.com>"]
+version = "0.1.0"
+
+[deps]
+Gtk = "4c0ca9eb-093a-5379-98c5-f87ac0bbbf44"
+Images = "916415d5-f1e6-5110-898d-aaa5f9f070e0"
+Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
+Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
+StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
diff --git a/example/percolation_example.jl b/example/percolation_example.jl
new file mode 100644
index 0000000..e4807c5
--- /dev/null
+++ b/example/percolation_example.jl
@@ -0,0 +1,18 @@
+using Percolation
+
+N = 50; p = 0.6
+sq = Square(N, p, "nn")
+sq.lattice_config.lattice_sites
+
+label_components!(sq)
+sq.lattice_properties.labeled_lattice_sites
+
+sq
+heatmap!(sq)
+
+linsize = 50
+ps = 0.1      
+pinc = 0.025
+pf = 1
+nsample = 50
+plot_percolation_prob("square", linsize, ps, pinc, pf, nsample)
\ No newline at end of file
diff --git a/src/Percolation.jl b/src/Percolation.jl
index f42cc88..87b960d 100644
--- a/src/Percolation.jl
+++ b/src/Percolation.jl
@@ -1,6 +1,6 @@
 module Percolation
 
-using Gtk, Gtk.ShortNames, StatsBase, Plots
+using Gtk, Gtk.ShortNames, StatsBase, Plots, Random
 gr()
 import Plots: heatmap, heatmap!
 import Images: label_components, label_components!
diff --git a/src/latticetype.jl b/src/latticetype.jl
index 1b6545b..906d748 100644
--- a/src/latticetype.jl
+++ b/src/latticetype.jl
@@ -79,7 +79,7 @@ for lattice_type in lattice_types
                                       false,                                # isaverage_clustersize
                                       false,                                # isstrength
                                       0,                                    # nclusters
-                                      Matrix{Int}(linear_size, linear_size) # labeled_lattice_sites
+                                      Array{Int64,2}(undef,linear_size, linear_size) # labeled_lattice_sites
                                      )
                    )
             end