Update bundled schema and doc

fix CVEProject#146 CVEProject#145

Fix CVEProject#145
Fix CVEProject#146

Merge branch 'master' of https://github.com/CVEProject/cve-schema

add a description for rejectedReasons

Merge pull request CVEProject#102 from chandanbn/rc4

CVE JSON schema release candidate 4 documents update.

Merge pull request CVEProject#98 from chandanbn/docs-rc3

Update docs mindmap for rc-3

Merge pull request CVEProject#72 from chandanbn/rc2-desc-fix

RC2: remove extraneous description, update docs, add mindmap

Merge pull request CVEProject#66 from chandanbn/cvss

Sync CVSS schema from First.org, fix CVEProject#57