Added basic colon function

man/colon.Rd

@@ -0,0 +1,16 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/colon.R
+\name{colon}
+\alias{colon}
+\title{Vector creation}
+\usage{
+colon(a, b)
+}
+\arguments{
+\item{a}{initial number}
+
+\item{b}{final number}
+}
+\description{
+Simulates the function `colon()` and its equivalent `:` operator from Matlab, which have a similar but not quite equivalent behavior when compared to `seq()` and `:` in R.
+}