Add ability to leave comments in flat files (#10)

* Add ability to leave comments in flat files
* just dont upload them
* #9
* Add comment in multiline str test
* and some more readme sections

Author: Rees Dooley

README.md

@@ -31,3 +31,29 @@ alpha_first="sandwich
     hotdog"
 other_thing=barbeque
 ```
+
+### Multiline values
+Multiline values like `alpha_first` in the above are supported, but and subsequent lines in the value must be indented.
+
+
+### Comments
+
+Comments in flat config files are allowed and not written to dynamo
+`#` within multiline values must be indented
+e.g.
+```
+❯ cat example.conf
+environment=confidynt-example
+#a comment
+other="
+  #a thing"
+❯ confidynt --table=deployment write example.conf
+example.conf written to deployment
+```
+Results in
+```
+❯ confidynt --table=deployment read environment confidynt-example
+environment=confidynt-example
+other="
+  #a thing"
+```

cli/write.go

@@ -36,6 +36,10 @@ func Write(table string, path string, ds service.Dynamo, w io.Writer) {
 			// Ignore blank lines
 			continue
 		}
+		if strings.HasPrefix(line, "#") {
+			// Ignore comments in flat files
+			continue
+		}
 		if propRe.MatchString(line) {
 			if key != "" {
 				config[key] = value

cli/write_test.go

@@ -29,9 +29,12 @@ func TestWrite(t *testing.T) {
 	conf := types.Config{}
 	conf[key] = val
 	conf["other_key"] = "other_val"
+	conf["multi_key"] = "\"multi\n #linething\""
 
 	text := "key=val\n"
+	text += "# a comment\n"
 	text += "other_key=other_val\n"
+	text += "multi_key=\"multi\n #linething\"\n"
 	ioutil.WriteFile(path, []byte(text), 0644)
 
 	buf := new(bytes.Buffer)