openlayers/openlayers — pull request #831 by fmgp (2013-01-11 09:24:35+00:00)
Title: Update lib/OpenLayers/Format/SOSGetObservation.js

Adding gml:TimePeriod support for eventTime parameter (writer only), for example:
```javascript
eventTime: {
timePeriod:{
beginPosition:"2012-12-01T01:01:00+00",
endPosition:"2013-01-10T23:30:30+00"
}
}
```
Will produce:
```xml

urn:ogc:data:time:iso8601

2012-12-01T01:01:00+00
2013-01-10T23:30:30+00

```