Updating README.

Also reenable tooltip functionality and add missing charging status mapping in the timeline.

Change-Id: I06d3718e78598468724fd2a80fb342b0515db7ae

README.md

@@ -33,7 +33,7 @@ Next, install Java from <http://www.oracle.com/technetwork/java/javase/downloads
 Next, download the Battery Historian code and its dependencies:
 
 ```
-$ go get -d github.com/google/battery-historian/...
+$ go get -d -u github.com/google/battery-historian/...
 ```
 
 Finally, run Battery Historian!
@@ -72,11 +72,15 @@ You are all set now. Run `historian` and visit <http://localhost:9999> and uploa
 
 ## Screenshots
 
+##### Timeline:
+
 ![Timeline](/screenshots/timeline.png "Timeline Visualization")
 
+##### System stats:
+
 ![System](/screenshots/system.png "Aggregated System statistics since the device was last fully charged")
 
-![History](/screenshots/history.png "Aggregated statistics during distinct discharge sessions")
+##### App stats:
 
 ![App](/screenshots/app.png "Application specific statistics")
 

js/color.js

@@ -249,7 +249,9 @@ historian.color.valueTextMap_[historian.metrics.Csv.BRIGHTNESS] = {
 /** @private {!Object<string>} */
 historian.color.valueTextMap_[historian.metrics.Csv.CHARGING_STATUS] = {
   'c': 'charging',
-  'd': 'discharging'
+  'd': 'discharging',
+  'n': 'not charging',
+  'f': 'full'
 };
 
 

js/historian_v2.js

@@ -170,6 +170,8 @@ historian.HistorianV2.prototype.zoomHandler_ = function() {
 historian.HistorianV2.prototype.handleMouse_ = function() {
   this.context_.svg
       .on('mousemove', function() {
+        this.seriesLevel_.showSummary();
+        this.bars_.showSeriesInfo();
         this.levelLine_.renderTimeInfo();
       }.bind(this))
       .on('mouseout', function() {