Fix build with CMS 0.5.
Fix build with CMS 0.5.

`babel-preset-react` was in the CMS deps before, so it worked, but it was removed from the CMS deps during cleanup, breaking our build.
Fixes #7.
thapaharibishnu/one-click-hugo-cms,shortformblog/one-click-hugo-cms,ee-jake-d/one-click-hugo-cms,inesOliveira3/one-click-hugo-cms,lbenie/resume,dwaiba/one-click-hugo-cms,ranasingh/psn-hugo-cms,dwaiba/one-click-hugo-cms,shortformblog/one-click-hugo-cms,philipppolder/ppolder,ranasingh/psn-hugo-cms,thapaharibishnu/one-click-hugo-cms,dsbrianwebster/one-click-hugo-cms,doktordata/netlify-test,jamorin/one-click-hugo-cms,mobarreto/one-click-hugo-cms,PolymerChar/polymerchar-cms,karsens/one-click-hugo-cms,thomsaunders/one-click-hugo-cms,jrc2/one-click-hugo-cms,austin94/burgersbybiggs.com,johnkmeas/one-hugo-cms,doktordata/netlify-test,ecerecerez/one-click-hugo-cms,mobarreto/one-click-hugo-cms,gongdo/gongdo.github.io,philipppolder/ppolder,thgrace/one-click-hugo-cms,jrc2/one-click-hugo-cms,thgrace/one-click-hugo-cms,lbenie/resume,ee-jake-d/one-click-hugo-cms,austin94/burgersbybiggs.com,PolymerChar/polymerchar-cms,gongdo/gongdo.github.io,ecerecerez/one-click-hugo-cms,jamorin/one-click-hugo-cms,thomsaunders/one-click-hugo-cms,dsbrianwebster/one-click-hugo-cms,karsens/one-click-hugo-cms,johnkmeas/one-hugo-cms,inesOliveira3/one-click-hugo-cms