DOC: Added more common example for np.c_
DOC: Added more common example for np.c_

I mostly use that object to bind 1D arrays as columns, so I added an example for that use case.

ahaldane/numpy,behzadnouri/numpy,anntzer/numpy,WarrenWeckesser/numpy,ssanderson/numpy,pizzathief/numpy,abalkin/numpy,numpy/numpy,rgommers/numpy,pdebuyl/numpy,WarrenWeckesser/numpy,bringingheavendown/numpy,solarjoe/numpy,ahaldane/numpy,pizzathief/numpy,charris/numpy,ssanderson/numpy,MSeifert04/numpy,tynn/numpy,pbrod/numpy,grlee77/numpy,mhvk/numpy,simongibbons/numpy,endolith/numpy,WarrenWeckesser/numpy,WarrenWeckesser/numpy,pbrod/numpy,pdebuyl/numpy,mattip/numpy,bringingheavendown/numpy,gfyoung/numpy,tynn/numpy,ahaldane/numpy,shoyer/numpy,b-carter/numpy,b-carter/numpy,seberg/numpy,jorisvandenbossche/numpy,madphysicist/numpy,mhvk/numpy,madphysicist/numpy,ahaldane/numpy,numpy/numpy,simongibbons/numpy,ahaldane/numpy,jakirkham/numpy,solarjoe/numpy,pdebuyl/numpy,mattip/numpy,MSeifert04/numpy,bertrand-l/numpy,simongibbons/numpy,charris/numpy,chatcannon/numpy,rgommers/numpy,jorisvandenbossche/numpy,pdebuyl/numpy,mhvk/numpy,charris/numpy,jorisvandenbossche/numpy,Eric89GXL/numpy,endolith/numpy,mattip/numpy,pbrod/numpy,gfyoung/numpy,jakirkham/numpy,behzadnouri/numpy,seberg/numpy,grlee77/numpy,pbrod/numpy,jakirkham/numpy,madphysicist/numpy,bertrand-l/numpy,jorisvandenbossche/numpy,bringingheavendown/numpy,rgommers/numpy,anntzer/numpy,MSeifert04/numpy,shoyer/numpy,anntzer/numpy,endolith/numpy,pizzathief/numpy,seberg/numpy,pizzathief/numpy,gfyoung/numpy,shoyer/numpy,chatcannon/numpy,abalkin/numpy,madphysicist/numpy,simongibbons/numpy,simongibbons/numpy,madphysicist/numpy,behzadnouri/numpy,Eric89GXL/numpy,MSeifert04/numpy,jakirkham/numpy,pizzathief/numpy,numpy/numpy,charris/numpy,tynn/numpy,shoyer/numpy,numpy/numpy,pbrod/numpy,b-carter/numpy,mhvk/numpy,ssanderson/numpy,grlee77/numpy,MSeifert04/numpy,grlee77/numpy,abalkin/numpy,seberg/numpy,mhvk/numpy,grlee77/numpy,shoyer/numpy,mattip/numpy,Eric89GXL/numpy,endolith/numpy,anntzer/numpy,solarjoe/numpy,WarrenWeckesser/numpy,Eric89GXL/numpy,rgommers/numpy,bertrand-l/numpy,jorisvandenbossche/numpy,chatcannon/numpy,jakirkham/numpy