nim nighty build for newcomers

• cf. official instructions https://github.com/nim-lang/Nim#compiling
• This repo is based on official instructions and add some functions for a nim's newcomer like me :) .
• Nim with 'spacemacs' is a good combination for me.

to start nim nighty build within a hour:

git clone https://github.com/kmry/nim_nighty_space
cd nim_nighty_space
make Nim

Then your C compiler(eg.gcc) will start to compile nim nighty build(a.k.a nim 0.17.3, on Feb. 2018).

After building a nighty version nim...:

Pls. see 'Makefile' to see how to do next.

if you need a temporal but good editor for nim:

Try 'spacemacs' with some basic settings. It is not difficult to start 'spacemacs'.