Add note about which files to hash

README.md

@@ -1,6 +1,6 @@
 # [electron-fingerprints](https://www.npmjs.com/package/electron-fingerprints) ![npm bundle size](https://img.shields.io/bundlephobia/minzip/electron-fingerprints) ![npm](https://img.shields.io/npm/v/electron-fingerprints) ![NPM](https://img.shields.io/npm/l/electron-fingerprints) ![Zero Dependencies](https://img.shields.io/badge/Dependencies-Zero-blue)
 
-Generates fingerprints for electron version detection by downloading electron releases and generating checksums of the files contained in each release.
+Generates fingerprints for electron version detection by downloading electron releases and generating checksums (sha1 hashes) of the files contained in each release. Published as a lookup table on NPM.
 
 ## why
 
@@ -43,6 +43,124 @@ A list of release fingerprints is under the `hashes` directory.
 
 - [ ] Add support for darwin-arm
 
+## which files are present?
+
+Here's a count of file extensions present across all releases:
+
+```
+      9 framework/Frameworks
+      9 Frameworks
+     13 app/Contents/MacOS/crash_report_sender
+     13 crash_report_sender
+     13 framework/Versions/A/Libraries/Libraries
+     13 framework/Versions/A/Resources/Inspector
+     13 Inspector
+     14 htaccess
+     15 npmignore
+     15 txt
+     26 1
+     26 strings
+     30 yml
+     45 markdown
+     50 framework/ReactiveObjC
+     50 framework/Versions/A/ReactiveObjC
+     59 4
+     70 11
+     72 app/Contents/MacOS/Electron Helper (GPU)
+     72 app/Contents/MacOS/Electron Helper (Plugin)
+     72 app/Contents/MacOS/Electron Helper (Renderer)
+     72 framework/Helpers
+     72 framework/Versions/A/Helpers/chrome_crashpad_handler
+     94 chrome_crashpad_handler
+     94 Helpers
+    100 ReactiveObjC
+    171 (GPU)
+    171 (Plugin)
+    171 (Renderer)
+    185 chrome-sandbox
+    223 app/Contents/MacOS/Electron Helper EH
+    223 app/Contents/MacOS/Electron Helper NP
+    223 EH
+    223 NP
+    230 framework/Versions/A/Resources/crashpad_handler
+    238 svg
+    262 framework/ReactiveCocoa
+    262 framework/Versions/A/ReactiveCocoa
+    312 app/Contents/MacOS/Electron
+    312 app/Contents/MacOS/Electron Helper
+    312 DS_Store
+    312 framework/Electron Framework
+    312 framework/Libraries
+    312 framework/Mantle
+    312 framework/Squirrel
+    312 framework/Versions/A/Electron Framework
+    312 framework/Versions/A/Mantle
+    312 framework/Versions/A/Resources/ShipIt
+    312 framework/Versions/A/Squirrel
+    357 crashpad_handler
+    436 electron
+    436 exe
+    436 ShipIt
+    449 Libraries
+    745 json
+    772 ReactiveCocoa
+    773 nib
+    774 icns
+    786 framework/Headers
+    786 framework/Modules
+    872 Framework
+    872 Mantle
+    872 Squirrel
+   1120 png
+   1158 Headers
+   1158 Modules
+   1248 framework/Resources
+   1248 framework/Versions/Current
+   1299 app/Contents/PkgInfo
+   1620 dat
+   1620 version
+   1650 LICENSE
+   1744 Current
+   1744 Resources
+   1762 so
+   1830 html
+   1844 PkgInfo
+   1944 modulemap
+   2202 dylib
+   2354 js
+   2437 asar
+   3237 bin
+   4272 Helper
+   6142 plist
+   6224 dll
+  34235 Electron
+  45360 h
+  84596 pak
+```
+
+`.pak` files are currently excluded from the lookup table, but the other files should be easily usable. While lookup up, try to get hashes from the following extensions:
+
+```
+.h
+.dll
+.plust
+.Helper
+.bin
+.asar
+.dylib
+.so
+.plist
+Electron Framework
+Electron Helper
+Electron Helper (GPU)
+Electron Helper (Plugin)
+Electron Helper (Renderer)
+electron
+(GPU)
+(Plugin)
+(Renderer)
+```
+
 ## license
 
 Released under WTFPL.