Added README.

README.md

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+# node-geoservices
+A thin Node.js client for the ESRI GeoServices API.
+
+## Documentation
+
+### GeoServices API
+
+http://www.esri.com/library/whitepapers/pdfs/geoservices-rest-spec.pdf
+
+### Using Map Services
+Export an image of a map:
+```javascript
+var options = {
+  host: 'sampleserver1.arcgisonline.com',
+  path: '/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer/export',
+  params: {
+    bbox: '-115.8,30.4,-85.5,50.5',
+    size: '800,600',
+    imageSR: 102004,
+    format: 'gif',
+    transparent: false
+  }
+};
+
+geoservices.get(options, function(result) {
+  console.log(result);
+});
+```
+A Find operation on a map looks like this:
+```javascript
+var options = {
+  host: 'sampleserver1.arcgisonline.com',
+  path: '/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/find',
+  params: {
+    searchText: 'island',
+    contains: true,
+    layers: '0,2',
+    returnGeometry: true
+  }
+};
+
+geoservices.get(options, function(result) {
+  console.log(result);
+});
+```
+
+## Contributing
+In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality.
+
+## Release History
+
+### v0.1.0
+  - Initial release
+
+## License
+Copyright (c) 2012 Ray Vernagus
+Licensed under the MIT license.