added julia

sheets/_julia/hello

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+# to install:
+#   (Debian/Ubuntu) apt-get install julia
+#   (Fedora/CentOS) dnf install julia
+#   (ArchLinux)     pacman -S julia
+# to execute:
+#   julia hello_world.jl
+#
+println("hello world")

sheets/julia

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+# Julia 
+# high-level dynamic programming language designed to address the needs of high-performance numerical analysis
+# and computational science while also being effective for general-purpose programming
+
+# Execute script from the file; pass aditional arguments
+julia script.jl arg1 arg2
+
+# Execute command like arguments like script
+julia -e 'for x in ARGS; println(x); end' foo bar
+
+# See also:
+#   Julia language cheat sheets at /julia/
+#   list of pages:      /julia/:list
+#   learn julia:        /julia/:learn
+#   search in pages:    /julia/~keyword