Merge branch 'babysleepsounds' into 'master'

Add protect.babysleepsounds meta-data

Per the contribution guidelines, "fdroid lint" and "fdroid rewritemeta" were run prior to submission. This ended up adding a blank Web Page entry. As there is no website beyond the GitHub page, this was ignored.

Locally the gradle steps used to build the new project were successful. However, fdroid hit the following error:
```
* What went wrong:
Execution failed for task ':app:lintVitalRelease'.
> java.lang.NullPointerException (no error message)
```
It was not clear if this was due to my local setup somehow, or if it is indicative of an issue. If this merge request fails to build, is there an obvious issue with the proposed change and may someone suggest a fix?

Finally, I observed that the master branch without my change failed the following:
```
$ fdroid readmeta
CRITICAL: 'NonFreeAssets' is not a valid Anti-Feature in com.nostra13.universalimageloader. Possible values: UpstreamNonFree, Tracking, Ads, NonFreeAdd, NonFreeDep, NonFreeNet
```

To avoid this, I needed to base my change on an older revision of fdroiddata. I did not investigate the root of this issue.

See merge request !1161

metadata/protect.babysleepsounds.txt

@@ -0,0 +1,23 @@
+Categories:Multimedia
+License:GPLv3+
+Web Site:
+Source Code:https://github.com/brarcher/baby-sleep-sounds
+Issue Tracker:https://github.com/brarcher/baby-sleep-sounds/issues
+
+Summary:Play sounds to help babies sleep
+Description:
+Baby Sleep Sounds will play a variety of sounds to help a baby sleep soundly.
+.
+
+Repo Type:git
+Repo:https://github.com/brarcher/baby-sleep-sounds
+
+Build:0.1,1
+    commit=v0.1
+    subdir=app
+    gradle=yes
+
+Auto Update Mode:None
+Update Check Mode:Tags
+Current Version:0.1
+Current Version Code:1