docs: use frontmatter for man page generation

Update the `docs-build.js` script to parse the name, man page section, and description out of the frontmatter and use that for the generated man page. This helps avoid repetition between the frontmatter section and the body of the page itself. Update the docs pages themselves to remove the H1 (title) and H2 (description). Finally, ensure that the frontmatter begins in column 0 on each page.

Author: ethomson

docs/content/cli-commands/npm-access.md

@@ -1,13 +1,9 @@
 ---
-section: cli-commands
 title: npm-access
+section: 1
 description: Set access level on published packages
 ---
 
-# npm-access(1)
-
-## Set access level on published packages
-
 ### Synopsis
 
 ```bash

docs/content/cli-commands/npm-adduser.md

@@ -1,13 +1,9 @@
- ---
-section: cli-commands
+---
 title: npm-adduser
-description: Set access level on published packages
+section: 1
+description: Add a registry user account
 ---
 
-# npm-adduser(1)
-
-## Add a registry user account
-
 ### Synopsis
 
 ```bash

docs/content/cli-commands/npm-audit.md

@@ -1,13 +1,9 @@
 ---
-section: cli-commands 
 title: npm-audit
+section: 1
 description: Run a security audit
 ---
 
-# npm-audit(1)
-
-## Run a security audit
-
 ### Synopsis
 
 ```bash

docs/content/cli-commands/npm-bin.md

@@ -1,13 +1,9 @@
 ---
-section: cli-commands 
 title: npm-bin
+section: 1
 description: Display npm bin folder
 ---
 
-# npm-bin(1)
-
-## Display npm bin folder
-
 ### Synopsis
 ```bash
 npm bin [-g|--global]

docs/content/cli-commands/npm-bugs.md

@@ -1,13 +1,9 @@
 ---
-section: cli-commands 
 title: npm-bugs
+section: 1
 description: Bugs for a package in a web browser maybe
 ---
 
-# npm-bugs(1)
-
-## Bugs for a package in a web browser maybe
-
 ### Synopsis
 ```bash
 npm bugs [<pkgname>]

docs/content/cli-commands/npm-build.md

@@ -1,13 +1,9 @@
 ---
-section: cli-commands 
 title: npm-build
+section: 1
 description: Build a package
 ---
 
-# npm-build(1)
-
-## Build a package
-
 ### Synopsis
 ```shell
 npm build [<package-folder>]

docs/content/cli-commands/npm-bundle.md

@@ -1,13 +1,9 @@
 ---
-section: cli-commands 
 title: npm-bundle
+section: 1
 description: REMOVED
 ---
 
-# npm-bundle(1)
-
-## REMOVED
-
 ### Description
 
 The `npm bundle` command has been removed in 1.0, for the simple reason

docs/content/cli-commands/npm-cache.md

@@ -1,13 +1,9 @@
 ---
-section: cli-commands 
 title: npm-cache
+section: 1
 description: Manipulates packages cache
 ---
 
-# npm-cache(1)
-
-## Manipulates packages cache
-
 ### Synopsis
 
 ```bash

docs/content/cli-commands/npm-ci.md

@@ -1,13 +1,9 @@
 ---
-section: cli-commands 
 title: npm-ci
+section: 1
 description: Install a project with a clean slate
 ---
 
-# npm-ci(1)
-
-## Install a project with a clean slate
-
 ### Synopsis
 ```bash
 npm ci

docs/content/cli-commands/npm-completion.md

@@ -1,13 +1,9 @@
 ---
-section: cli-commands 
 title: npm-completion
+section: 1
 description: Tab Completion for npm
 ---
 
-# npm-completion(1)
-
-## Tab Completion for npm
-
 ### Synopsis
 ```bash
 source <(npm completion)