README.rst: Add 'C' to supported languages
README.rst: Add 'C' to supported languages

Updated the Supported Languages table to include 'C'

Closes https://github.com/coala/coala-bears/issues/481

Vamshi99/coala-bears,kaustubhhiware/coala-bears,coala-analyzer/coala-bears,shreyans800755/coala-bears,LWJensen/coala-bears,shreyans800755/coala-bears,seblat/coala-bears,damngamerz/coala-bears,damngamerz/coala-bears,madhukar01/coala-bears,yash-nisar/coala-bears,coala/coala-bears,dosarudaniel/coala-bears,Asnelchristian/coala-bears,coala/coala-bears,meetmangukiya/coala-bears,madhukar01/coala-bears,vijeth-aradhya/coala-bears,shreyans800755/coala-bears,aptrishu/coala-bears,dosarudaniel/coala-bears,coala/coala-bears,damngamerz/coala-bears,ankit01ojha/coala-bears,meetmangukiya/coala-bears,coala-analyzer/coala-bears,srisankethu/coala-bears,madhukar01/coala-bears,damngamerz/coala-bears,aptrishu/coala-bears,damngamerz/coala-bears,aptrishu/coala-bears,madhukar01/coala-bears,seblat/coala-bears,seblat/coala-bears,srisankethu/coala-bears,LWJensen/coala-bears,aptrishu/coala-bears,refeed/coala-bears,incorrectusername/coala-bears,damngamerz/coala-bears,horczech/coala-bears,coala/coala-bears,Vamshi99/coala-bears,horczech/coala-bears,gs0510/coala-bears,shreyans800755/coala-bears,LWJensen/coala-bears,naveentata/coala-bears,Shade5/coala-bears,madhukar01/coala-bears,gs0510/coala-bears,arjunsinghy96/coala-bears,aptrishu/coala-bears,kaustubhhiware/coala-bears,Asnelchristian/coala-bears,coala-analyzer/coala-bears,dosarudaniel/coala-bears,madhukar01/coala-bears,madhukar01/coala-bears,Vamshi99/coala-bears,Shade5/coala-bears,arjunsinghy96/coala-bears,srisankethu/coala-bears,arjunsinghy96/coala-bears,dosarudaniel/coala-bears,aptrishu/coala-bears,naveentata/coala-bears,dosarudaniel/coala-bears,damngamerz/coala-bears,vijeth-aradhya/coala-bears,Vamshi99/coala-bears,refeed/coala-bears,yash-nisar/coala-bears,dosarudaniel/coala-bears,coala-analyzer/coala-bears,gs0510/coala-bears,meetmangukiya/coala-bears,kaustubhhiware/coala-bears,sounak98/coala-bears,aptrishu/coala-bears,naveentata/coala-bears,incorrectusername/coala-bears,horczech/coala-bears,yash-nisar/coala-bears,coala/coala-bears,vijeth-aradhya/coala-bears,aptrishu/coala-bears,dosarudaniel/coala-bears,seblat/coala-bears,yash-nisar/coala-bears,madhukar01/coala-bears,yash-nisar/coala-bears,yash-nisar/coala-bears,vijeth-aradhya/coala-bears,aptrishu/coala-bears,sounak98/coala-bears,kaustubhhiware/coala-bears,incorrectusername/coala-bears,ankit01ojha/coala-bears,coala-analyzer/coala-bears,Shade5/coala-bears,refeed/coala-bears,kaustubhhiware/coala-bears,horczech/coala-bears,Shade5/coala-bears,yashtrivedi96/coala-bears,yashtrivedi96/coala-bears,ankit01ojha/coala-bears,yashtrivedi96/coala-bears,yashtrivedi96/coala-bears,madhukar01/coala-bears,coala/coala-bears,horczech/coala-bears,Vamshi99/coala-bears,sounak98/coala-bears,gs0510/coala-bears,dosarudaniel/coala-bears,gs0510/coala-bears,Vamshi99/coala-bears,shreyans800755/coala-bears,seblat/coala-bears,coala/coala-bears,arjunsinghy96/coala-bears,yash-nisar/coala-bears,Shade5/coala-bears,coala/coala-bears,Asnelchristian/coala-bears,refeed/coala-bears,LWJensen/coala-bears,ankit01ojha/coala-bears,LWJensen/coala-bears,yash-nisar/coala-bears,yash-nisar/coala-bears,shreyans800755/coala-bears,shreyans800755/coala-bears,Vamshi99/coala-bears,sounak98/coala-bears,shreyans800755/coala-bears,coala/coala-bears,Asnelchristian/coala-bears,kaustubhhiware/coala-bears,ankit01ojha/coala-bears,yashtrivedi96/coala-bears,coala/coala-bears,coala/coala-bears,srisankethu/coala-bears,meetmangukiya/coala-bears,srisankethu/coala-bears,refeed/coala-bears,arjunsinghy96/coala-bears,kaustubhhiware/coala-bears,kaustubhhiware/coala-bears,LWJensen/coala-bears,Asnelchristian/coala-bears,Asnelchristian/coala-bears,Asnelchristian/coala-bears,sounak98/coala-bears,Shade5/coala-bears,LWJensen/coala-bears,coala-analyzer/coala-bears,vijeth-aradhya/coala-bears,Shade5/coala-bears,srisankethu/coala-bears,Asnelchristian/coala-bears,meetmangukiya/coala-bears,refeed/coala-bears,ankit01ojha/coala-bears,arjunsinghy96/coala-bears,LWJensen/coala-bears,vijeth-aradhya/coala-bears,sounak98/coala-bears,incorrectusername/coala-bears,damngamerz/coala-bears,horczech/coala-bears,refeed/coala-bears,yash-nisar/coala-bears,shreyans800755/coala-bears,srisankethu/coala-bears,yashtrivedi96/coala-bears,coala/coala-bears,gs0510/coala-bears,Vamshi99/coala-bears,damngamerz/coala-bears,srisankethu/coala-bears,dosarudaniel/coala-bears,horczech/coala-bears,naveentata/coala-bears,horczech/coala-bears,kaustubhhiware/coala-bears,arjunsinghy96/coala-bears,meetmangukiya/coala-bears,Shade5/coala-bears,incorrectusername/coala-bears,seblat/coala-bears,ankit01ojha/coala-bears,horczech/coala-bears,incorrectusername/coala-bears,vijeth-aradhya/coala-bears,srisankethu/coala-bears,naveentata/coala-bears,incorrectusername/coala-bears,vijeth-aradhya/coala-bears,meetmangukiya/coala-bears,sounak98/coala-bears,naveentata/coala-bears,aptrishu/coala-bears,LWJensen/coala-bears,coala-analyzer/coala-bears,gs0510/coala-bears,sounak98/coala-bears,incorrectusername/coala-bears,ankit01ojha/coala-bears,arjunsinghy96/coala-bears,vijeth-aradhya/coala-bears,naveentata/coala-bears,Shade5/coala-bears,meetmangukiya/coala-bears,gs0510/coala-bears,yashtrivedi96/coala-bears,refeed/coala-bears,Vamshi99/coala-bears,naveentata/coala-bears,ankit01ojha/coala-bears,shreyans800755/coala-bears,incorrectusername/coala-bears,refeed/coala-bears,ankit01ojha/coala-bears,horczech/coala-bears,coala-analyzer/coala-bears,refeed/coala-bears,shreyans800755/coala-bears,naveentata/coala-bears,damngamerz/coala-bears,refeed/coala-bears,aptrishu/coala-bears,yashtrivedi96/coala-bears,Asnelchristian/coala-bears,sounak98/coala-bears,seblat/coala-bears,Vamshi99/coala-bears,Vamshi99/coala-bears,seblat/coala-bears,arjunsinghy96/coala-bears,ankit01ojha/coala-bears,gs0510/coala-bears,srisankethu/coala-bears,yashtrivedi96/coala-bears,horczech/coala-bears,meetmangukiya/coala-bears,damngamerz/coala-bears,yash-nisar/coala-bears,srisankethu/coala-bears,coala-analyzer/coala-bears