Update README

Author: cwarden

README.md

@@ -1,22 +1,26 @@
-batchforce
-==========
+# batchforce
 
-A go library and CLI to make bulk updates in Salesforce using a SOQL query and the Bulk
-API.
+A command-line application to make bulk updates in Salesforce using the Bulk API.
+
+* Use a SOQL query to retrieve the input data.
+* Use an expr expression to transform the input into the data to load into Salesforce
 
 The active [force CLI](https://github.com/ForceCLI/force) login is used, so log
 in using `force login` or set your active user using `force active -a
 <username>` before running your application.
 
-Installation
-============
+## Installation
+
+Download the latest release from
+https://github.com/octoberswimmer/batchforce/releases.  Executables are
+available for Windows, Linux and MacOS.
 
+Install from source:
 ```
-$ go install github.com/octoberswimmer/batchforce/cmd/batchforce
+$ go install github.com/octoberswimmer/batchforce/cmd/batchforce@latest
 ```
 
-CLI Example
-===========
+## Example Usage
 
 Each record is made available to [expr](https://github.com/antonmedv/expr/blob/master/docs/Language-Definition.md) as
 `record`.  The expr expression should evaluate to a single map or an array of
@@ -31,8 +35,7 @@ This will query all Accounts whose Name doesn't end with "Test" and append "Test
 
 See [docs/batchforce.md](docs/batchforce.md) for all supported commands.
 
-CLI Help
-========
+## CLI Help
 
 ```
 $ batchforce help
@@ -95,53 +98,3 @@ Flags:
 
 Use "batchforce [command] --help" for more information about a command.
 ```
-
-Library Example
-===============
-
-```go
-package main
-
-import (
-	batch "github.com/octoberswimmer/batchforce"
-	force "github.com/ForceCLI/force/lib"
-	"time"
-)
-
-var (
-	fiftyYearsAgo  = time.Now().AddDate(-50, 0, 0)
-	thirtyYearsAgo = time.Now().AddDate(-30, 0, 0)
-)
-
-func main() {
-	query := `
-		SELECT
-			Id,
-			Birthdate
-		FROM
-			Contact
-		WHERE
-			Birthdate != null
-	`
-
-	batch.Run("Contact", query, setTitle)
-}
-
-func setTitle(record force.ForceRecord) (updates []force.ForceRecord) {
-	birthdate, err := time.Parse("2006-01-02", record["Birthdate"].(string))
-	if err != nil {
-		return
-	}
-	update := force.ForceRecord{}
-	update["Id"] = record["Id"].(string)
-	switch {
-	case birthdate.Before(fiftyYearsAgo):
-		update["Title"] = "Geezer"
-		updates = append(updates, update)
-	case birthdate.After(thirtyYearsAgo):
-		update["Title"] = "Whippersnapper"
-		updates = append(updates, update)
-	}
-	return
-}
-```