diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b25c15b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*~
diff --git a/src/shape_functions.jl~ b/src/shape_functions.jl~
deleted file mode 100644
index f035904..0000000
--- a/src/shape_functions.jl~
+++ /dev/null
@@ -1,19 +0,0 @@
-function C2D4(ξ::Float64, η::Float64)
-     values::Array{Float64, 1} = [(1 - ξ) * (1 - η),
-                                  ξ * (1 - η),
-                                  ξ * η,
-                                  (1 - ξ) * η]
-    return values
-end
-
-function C3D8(ξ::Float64, η::Float64, μ::Float64)
-    values::Array{Float64, 1} = 1 / 8 * [(1 - ξ) * (1 - η) * (1 - μ),
-                                         (1 + ξ) * (1 - η) * (1 - μ),
-                                         (1 + ξ) * (1 + η) * (1 - μ),
-                                         (1 - ξ) * (1 + η) * (1 - μ),
-                                         (1 - ξ) * (1 - η) * (1 + μ),
-                                         (1 + ξ) * (1 - η) * (1 + μ),
-                                         (1 + ξ) * (1 + η) * (1 + μ),
-                                         (1 - ξ) * (1 + η) * (1 + μ)]
-    return values
-end