Removed 1 specification from Battery Shield

Not sure why 'Provide link to the datasheets MCP73871 and TPS61200' is under Specifications...
2 more gms ---> g
translated shield.md to ZH
removed Spark RC kit contents

no longer sold so not going to translate
Updated zh version based on recent PR update
Update connect.md
Added in the 2 latest Network functions

NetworkClass::RSSI() and Network.ping()
Merge pull request #149 from kennethlimcp/patch-14

Added in the 2 latest Network functions
Merge pull request #148 from kennethlimcp/patch-12

removed line 113
Merge pull request #147 from kennethlimcp/patch-11

Updated zh version based on recent PR
Merge pull request #145 from kennethlimcp/patch-9

2 more gms ---> g
Merge pull request #146 from kennethlimcp/master

Shields.md --> ZH
Added datasheet links for Battery shield
Merge pull request #143 from kennethlimcp/patch-10

Removed 1 specification from Battery Shield
Spark.subscribe documented
Merge branch 'master' into gh-pages