document preload and exported modules

Author: isaacs

README.md

@@ -25,6 +25,62 @@ semver.valid(semver.coerce('v2')) // '2.0.0'
 semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7'
 ```
 
+This module uses getters to lazily load only the parts of the package that
+are used.  To use it with Webpack and other projects that need string
+literals as the argument to `require()`, load it this way:
+
+```js
+// load the whole API at once in a single object
+const semver = require('semver/preload')
+
+// or just load the bits you need
+// all of them listed here, just pick and choose what you want
+
+// classes
+const SemVer = require('semver/classes/semver')
+const Comparator = require('semver/classes/comparator')
+const Range = require('semver/classes/range')
+
+// functions for working with versions
+const semverParse = require('semver/functions/parse')
+const semverValid = require('semver/functions/valid')
+const semverClean = require('semver/functions/clean')
+const semverInc = require('semver/functions/inc')
+const semverDiff = require('semver/functions/diff')
+const semverMajor = require('semver/functions/major')
+const semverMinor = require('semver/functions/minor')
+const semverPatch = require('semver/functions/patch')
+const semverPrerelease = require('semver/functions/prerelease')
+const semverCompare = require('semver/functions/compare')
+const semverRcompare = require('semver/functions/rcompare')
+const semverCompareLoose = require('semver/functions/compare-loose')
+const semverCompareBuild = require('semver/functions/compare-build')
+const semverSort = require('semver/functions/sort')
+const semverRsort = require('semver/functions/rsort')
+
+// low-level comparators between versions
+const semverGt = require('semver/functions/gt')
+const semverLt = require('semver/functions/lt')
+const semverEq = require('semver/functions/eq')
+const semverNeq = require('semver/functions/neq')
+const semverGte = require('semver/functions/gte')
+const semverLte = require('semver/functions/lte')
+const semverCmp = require('semver/functions/cmp')
+const semverCoerce = require('semver/functions/coerce')
+
+// working with ranges
+const semverSatisfies = require('semver/functions/satisfies')
+const semverMaxSatisfying = require('semver/ranges/max-satisfying')
+const semverMinSatisfying = require('semver/ranges/min-satisfying')
+const semverToComparators = require('semver/ranges/to-comparators')
+const semverMinVersion = require('semver/ranges/min-version')
+const semverValidRange = require('semver/ranges/valid')
+const semverOutside = require('semver/ranges/outside')
+const semverGtr = require('semver/ranges/gtr')
+const semverLtr = require('semver/ranges/ltr')
+const semverIntersects = require('semver/ranges/intersects')
+```
+
 As a command-line utility:
 
 ```