Remove "only usable with --unused" from docs

Author: blakeembrey

cli.js

@@ -28,8 +28,8 @@ if (args.help || args._.length === 0) {
   console.log('\nOptions:')
   console.log('--missing (default)   Check to make sure that all modules in your code are listed in your package.json')
   console.log('--unused, --extra     The inverse of the --missing check and will tell you which modules in your package.json *were not* used in your code')
-  console.log("--no-dev              Won't tell you about which devDependencies in your package.json dependencies that were not used in your code. Only usable with --unused")
-  console.log("--ignore-module, -i   Won't tell you about module names passed in as --ignore-module / -i. Only usable with --unused")
+  console.log("--no-dev              Won't tell you about devDependencies that are missing or unused")
+  console.log("--ignore-module, -i   Won't tell you about these module names when missing or unused")
   console.log('--entry               By default your main and bin entries from package.json will be parsed, but you can add more the list of entries by passing them in as --entry')
   console.log("--no-default-entries  Won't parse your main and bin entries from package.json will be parsed")
   console.log('--detective           Requireable path containing an alternative implementation of the detective module that supports alternate syntaxes')

readme.md

@@ -16,7 +16,7 @@ checks which modules you have used in your code and then makes sure they are lis
 
 the goal of this module is to simply check that all non-relative modules that get `require()`'d are in package.json, which prevents people from getting 'module not found' errors when they install your module that has missing deps which was accidentally published to NPM (happened to me all the time, hence the impetus to write this module).
 
-## CLI usage
+## cli usage
 
 ```
 $ npm install dependency-check -g
@@ -44,11 +44,11 @@ running `dependency-check ./package.json --unused` will do the inverse of the de
 
 ### --no-dev
 
-running `dependency-check ./package.json --unused --no-dev` will not tell you if any devDependencies in your package.json were not used in your code. Only usable with `--unused`
+running `dependency-check ./package.json --unused --no-dev` will not tell you if any devDependencies in your package.json were missing or unused
 
 ### --ignore-module, -i
 
-running `dependency-check ./package.json --unused --ignore-module foo` will not tell you if the `foo` module was not used in your code. You can specify as many separate `--ignore-module` arguments as you want. Only usable with `--unused`
+running `dependency-check ./package.json --unused --ignore-module foo` will not tell you if the `foo` module was not used in your code. You can specify as many separate `--ignore-module` arguments as you want
 
 ### --entry