Added `make install`

closes #67

Makefile

@@ -34,5 +34,8 @@ release:
 	echo "Not yet implemented."
 
 install:
-	#TODO install Julia and/or package dependencies?
-	echo "Not yet implemented (#67)."
+	# install Julia and/or package dependencies TODO needs testing
+	echo "Installing Julia and juliaup"
+	curl -fsSL https://install.julialang.org | sh
+	echo "Installing package dependencies"
+	julia -e "Pkg.activate(\".\"); Pkg.instantiate()"