docs: refreshed npm updated docs

PR-URL: #2558
Credit: @ruyadorno
Close: #2558
Reviewed-by: @wraithgar

docs/content/commands/npm-update.md

@@ -1,7 +1,7 @@
 ---
 title: npm-update
 section: 1
-description: Update a package
+description: Update packages
 ---
 
 ### Synopsis
@@ -27,22 +27,11 @@ packages.
 If no package name is specified, all packages in the specified location (global
 or local) will be updated.
 
-As of `npm@2.6.1`, the `npm update` will only inspect top-level packages.
-Prior versions of `npm` would also recursively inspect all dependencies.
-To get the old behavior, use `npm --depth 9999 update`.
-
-As of `npm@5.0.0`, the `npm update` will change `package.json` to save the 
-new version as the minimum required dependency. To get the old behavior, 
-use `npm update --no-save`.
-
 ### Example
 
-IMPORTANT VERSION NOTE: these examples assume `npm@2.6.1` or later.  For
-older versions of `npm`, you must specify `--depth 0` to get the behavior
-described below.
-
 For the examples below, assume that the current package is `app` and it depends
-on dependencies, `dep1` (`dep2`, .. etc.).  The published versions of `dep1` are:
+on dependencies, `dep1` (`dep2`, .. etc.).  The published versions of `dep1`
+are:
 
 ```json
 {
@@ -84,10 +73,10 @@ However, if `app`'s `package.json` contains:
 }
 ```
 
-In this case, running `npm update` will install `dep1@1.1.2`.  Even though the `latest`
-tag points to `1.2.2`, this version does not satisfy `~1.1.1`, which is equivalent
-to `>=1.1.1 <1.2.0`.  So the highest-sorting version that satisfies `~1.1.1` is used,
-which is `1.1.2`.
+In this case, running `npm update` will install `dep1@1.1.2`.  Even though the
+`latest` tag points to `1.2.2`, this version do not satisfy `~1.1.1`, which is
+equivalent to `>=1.1.1 <1.2.0`.  So the highest-sorting version that satisfies
+`~1.1.1` is used, which is `1.1.2`.
 
 #### Caret Dependencies below 1.0.0
 
@@ -120,7 +109,9 @@ version that satisfies `^0.4.0` (`>= 0.4.0 <0.5.0`)
 package that is `outdated` -- that is, has a version that is different from
 `wanted`.
 
-Note: Globally installed packages are treated as if they are installed with a caret semver range specified. So if you require to update to `latest` you may need to run `npm install -g [<pkg>...]`
+Note: Globally installed packages are treated as if they are installed with a
+caret semver range specified. So if you require to update to `latest` you may
+need to run `npm install -g [<pkg>...]`
 
 NOTE: If a package has been upgraded to a version newer than `latest`, it will
 be _downgraded_.